CN108198423A - A kind of protrusion Crash characteristics recognition methods of two displays signal control cross level-crossing - Google Patents
A kind of protrusion Crash characteristics recognition methods of two displays signal control cross level-crossing Download PDFInfo
- Publication number
- CN108198423A CN108198423A CN201810069930.0A CN201810069930A CN108198423A CN 108198423 A CN108198423 A CN 108198423A CN 201810069930 A CN201810069930 A CN 201810069930A CN 108198423 A CN108198423 A CN 108198423A
- Authority
- CN
- China
- Prior art keywords
- accident
- entrance
- vehicle
- cross level
- crossing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 43
- 238000007790 scraping Methods 0.000 claims description 56
- 230000007935 neutral effect Effects 0.000 claims description 25
- 238000004364 calculation method Methods 0.000 claims description 7
- 241000209094 Oryza Species 0.000 claims description 6
- 235000007164 Oryza sativa Nutrition 0.000 claims description 6
- 235000009566 rice Nutrition 0.000 claims description 6
- 238000000205 computational method Methods 0.000 claims description 4
- 238000012502 risk assessment Methods 0.000 abstract description 3
- 206010039203 Road traffic accident Diseases 0.000 description 9
- 238000010586 diagram Methods 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005206 flow analysis Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000001002 morphogenetic effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
- G08G1/0125—Traffic data processing
- G08G1/0129—Traffic data processing for creating historical data or processing based on historical data
Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Traffic Control Systems (AREA)
Abstract
A kind of protrusion Crash characteristics recognition methods of two displays signal control cross level-crossing,It belongs to crossing accident risk assessment field,Solves the current recognition methods for lacking and different Crash characteristics in signalized crossing being shown for city two,So that the Crash characteristics risk of intersection is indefinite,The problem of corresponding safety improvement measure is not efficient enough,Etesian bicycle itself in some roadway sign control cross level-crossing of the city is obtained using factual survey,It knocks into the back,Head-on collision,Angular impact,The accident number with right angle collision accident is scraped in the same direction,Utilize obtained bicycle itself,It knocks into the back,Head-on collision,Angular impact,The accident chance number with right angle collision accident is scraped in the same direction,Bicycle itself is calculated respectively,It knocks into the back,Head-on collision,Angular impact,The accident risk with right angle collision accident is scraped in the same direction,To identify the protrusion Crash characteristics of intersection.The present invention is suitable for the protrusion Crash characteristics identification that urban road two shows signal control cross level-crossing.
Description
Technical field
The present invention relates to the protrusion Crash characteristics recognition methods of a kind of two display signal control cross level-crossings, belong to
Two display signal control cross level-crossing accident risk assessment fields in urban road.
Background technology
With being continuously increased for automobile usage amount, traffic accident has become a serious social concern.According to statistics, city
In 60~70% traffic accident be happened at level-crossing.Therefore, the generation of intersection accidents accident is reduced, to improving
The traffic safety status in entire city is particularly significant.At present, the intersection of city main roads employs control mode signal,
This undoubtedly improves the traffic capacity and travel safety of intersection.But urban road signal control cross plane of today
Intersection still in the traffic accident that various Crash characteristics occur, produces urban intersection very big security risk, and
Economic loss is huge caused by traffic accident.
At present, domestic scholars are merely using the calculation formula of million vehicle accident rates come identification signal control intersection
Prominent Crash characteristics, there is no consider in different types of Crash characteristics and signalized crossing between the vehicle method of operation
Correlation, the accident occurrence risk that a certain specific Crash characteristics can not be depicted are horizontal；Some foreign scholars, such as T. are drawn
Bo Boerte, E.M. Yuriy Lobanov et al. is proposed is endangered based on the level-crossing of intersection traffic characteristic point and traffic flow analysis
Dangerous degree computational methods, but these methods do not have the accident for clearly providing a certain specific Crash characteristics in level-crossing yet
Risk level size.
Clearly as the class of the traffic accident caused by the complexity of urban signal controlling cross intersection accidents stream
Type also has diversity, and the organizational form of the generation of these different type accidents and intersection, traffic control mode and traffic
Traffic conditions etc. have close relationship.Therefore, the two display signal control specific accident of cross level-crossing of analysis and research
Morphogenetic mechanism, so as to finding out Crash characteristics prominent in intersection and targetedly proposing that safety measure has
Important realistic meaning.
Invention content
Lack the purpose of the present invention is to solve current for different accidents in the display of city two signalized crossing
The recognition methods of form, and then lead to the indefinite problem of Crash characteristics risk of urban signal controlling intersection.
A kind of protrusion Crash characteristics recognition methods of two displays signal control cross level-crossing, this method passes through following
Step is realized：
Step 1: investigate and count casualty data, the road of some two display signal control cross level-crossing of city
Geometrical condition data, traffic signalization data and traffic flow data；
Step 2: calculate the accident chance number of two displays signal control cross level-crossing bicycle itself accident；
Step 3: calculate the accident chance number of the two displays signal control cross level-crossing rear-end collision；
Step 4: calculate the accident chance number of the two displays signal control cross level-crossing head-on collision accident；
Step 5: calculate the accident chance number of the two displays signal control cross level-crossing angular impact accident；
Step 6: calculate the accident chance number of the two displays signal control cross level-crossing scraping accident in the same direction；
Step 7: calculate the accident chance number of the two displays signal control cross level-crossing right angle collision accident；
Step 8: utilize some two display signal control cross level-crossing of the urban road investigated in step 1
The interior annual accident number N of bicycle itself accident occurred1, rear-end collision accident number N2, head-on collision accident accident number
N3, angular impact accident accident number N4, scraping accident in the same direction accident number N5With the accident number N of right angle collision accident6,
The bicycle itself that two displays signal control cross level-crossing occurs in 1 year calculated using step 2 to step 7
The accident chance number O of accident1, rear-end collision accident chance number O2, head-on collision accident accident chance number O3, angular impact accident
Accident chance number O4, scraping accident in the same direction accident chance number O5With the accident chance number O of right angle collision accident6；It calculates respectively
The accident risk R of two displays signal control cross level-crossing bicycle itself accident1, rear-end collision accident risk R2, it is right
Hit the accident risk R of accident3, angular impact accident accident risk R4, scraping accident in the same direction accident risk R5Thing is collided with right angle
Therefore accident risk R6；
Step 9: R in comparison step eight1、R2、R3、R4、R5And R6Size, select R1、R2、R3、R4、R5And R6In
Maximum value, using the Crash characteristics representated by the maximum value selected as the protrusion accident of signal control cross level-crossing
Form.
Beneficial effects of the present invention are：
The present invention shows signal control bicycle itself accident of cross level-crossing, rear-end collision, right using city two
The actual accidents number of accident, angular impact accident, scraping accident in the same direction and right angle collision accident is hit, with reference to the city two calculated
Show bicycle itself accident in signal control 1 year of cross level-crossing, rear-end collision, head-on collision accident, angular impact accident,
The accident chance number of scraping accident and right angle collision accident in the same direction calculates bicycle itself accident, rear-end collision, head-on collision thing respectively
Therefore the accident risk of angular impact accident, scraping accident in the same direction and right angle collision accident, by comparing the accident of different Crash characteristics
Risk size, and the Crash characteristics of accident risk maximum are selected as the prominent of the two displays signal control cross level-crossing
Form that accidents happened proposes specific Improvement for traffic safety for the protrusion Crash characteristics of the invention identified, can subtract
The 30% of the accident quantity of few two displays signal control cross level-crossing, the delay rate of intersection declines 28%, intersection
Whole traffic efficiency improves 24%, helps to improve the level of security that city two shows signal control cross level-crossing.It fills out
The blank of the technical field is mended.
Description of the drawings
Fig. 1 is the protrusion Crash characteristics identification side that a kind of two displays signal of the present invention controls cross level-crossing
The flow chart of method；
Fig. 2 is the Crash characteristics signal of the rear-end collision of of the present invention two display signal control plane cross junctions
Figure；
Wherein：" ← " represents advance wagon flow direction, and "○" represents traffic accident；1. between the straight traffic for representing entrance 1
Rear-end collision, 2. represent the rear-end collision between the left turn traffic of entrance 1,3. represent chasing after between the right-hand rotation wagon flow of entrance 1
Tail accident；And two show that the thing that knocks into the back between straight traffic may occur for each entrance of signal control cross level-crossing
Therefore the rear-end collision between the rear-end collision and right-hand rotation wagon flow between left turn traffic；M1In the road for representing entrance 1 and entrance 3
Heart line, M2Represent the road axis of entrance 2 and entrance 4；
Fig. 3 is the Crash characteristics signal of the head-on collision accident of of the present invention two display signal control plane cross junctions
Figure；
Wherein：1. the straight traffic near road axis of entrance 1 is represented with entrance 3 near road axis
Straight traffic between head-on collision accident, 2. represent the straight traffic near road axis of entrance 2 and entrance 4 near
Head-on collision accident between the straight traffic of nearly road axis；
Fig. 4 is that the Crash characteristics of the angular impact accident of of the present invention two display signal control plane cross junctions show
It is intended to；
Wherein：1. representing the I type angular impact accidents between the straight traffic of entrance 3 and the left turn traffic of entrance 1,2. represent
II type angular impact accidents between the left turn traffic of entrance 1 and the straight traffic of entrance 3；And two show signal control cross plane
Described two angular impact accidents may occur for each entrance of intersection；
Fig. 5 is the Crash characteristics of the scraping accident in the same direction of of the present invention two display signal control plane cross junctions
Schematic diagram；
Wherein：It is 1. in the same direction between representing the wagon flow travelled on two neighboring Through Lane in the straight traffic of entrance 1
Collision accident；And two display signal control cross level-crossing each entrance between straight traffic on adjacent lane
Scraping accident in the same direction may occur；
Fig. 6 is the Crash characteristics of the right angle collision accident of of the present invention two display signal control plane cross junctions
Schematic diagram；
Wherein：1. representing the right angle collision accident between the straight traffic of entrance 1 and the straight traffic of entrance 2,2. represent
3. right angle collision accident between the left turn traffic of entrance 1 and the left turn traffic of entrance 3 represents the left turn traffic of entrance 1 with entering
Right angle collision accident between the left turn traffic of mouth 4,4. represents between the straight traffic of entrance 1 and the left turn traffic of entrance 4
5. right angle collision accident represents the right angle collision accident between the straight traffic of entrance 1 and the straight traffic of entrance 4；And two is aobvious
Five kinds of angular impact accidents may be occurred by showing each entrance of signal control cross level-crossing；
Fig. 7 is the parameter schematic diagram of typical two display signal control plane cross junctions；
Fig. 8 is the schematic diagram of two display signal control plane cross junctions in the embodiment of the present invention；
Wherein：Pcu/h is the standard car quantity reached per hour.
Specific embodiment
Specific embodiment one：The present embodiment will be described with reference to Fig. 1, and one kind two described in present embodiment shows signal control
The protrusion Crash characteristics recognition methods of cross level-crossing processed, this method through the following steps that realize：
Step 1: investigate and count casualty data, the road of some two display signal control cross level-crossing of city
Geometrical condition data, traffic signalization data and traffic flow data；
Step 2: calculate the accident chance number of two displays signal control cross level-crossing bicycle itself accident；
Step 3: calculate the accident chance number of the two displays signal control cross level-crossing rear-end collision；
Step 4: calculate the accident chance number of the two displays signal control cross level-crossing head-on collision accident；
Step 5: calculate the accident chance number of the two displays signal control cross level-crossing angular impact accident；
Step 6: calculate the accident chance number of the two displays signal control cross level-crossing scraping accident in the same direction；
Step 7: calculate the accident chance number of the two displays signal control cross level-crossing right angle collision accident；
Step 8: utilize some two display signal control cross level-crossing of the urban road investigated in step 1
The interior annual accident number N of bicycle itself accident occurred1, rear-end collision accident number N2, head-on collision accident accident number
N3, angular impact accident accident number N4, scraping accident in the same direction accident number N5With the accident number N of right angle collision accident6,
The bicycle itself that two displays signal control cross level-crossing occurs in 1 year calculated using step 2 to step 7
The accident chance number O of accident1, rear-end collision accident chance number O2, head-on collision accident accident chance number O3, angular impact accident
Accident chance number O4, scraping accident in the same direction accident chance number O5With the accident chance number O of right angle collision accident6；It calculates respectively
The accident risk R of two displays signal control cross level-crossing bicycle itself accident1, rear-end collision accident risk R2, it is right
Hit the accident risk R of accident3, angular impact accident accident risk R4, scraping accident in the same direction accident risk R5Thing is collided with right angle
Therefore accident risk R6；
Step 9: R in comparison step eight1、R2、R3、R4、R5And R6Size, select R1、R2、R3、R4、R5And R6In
Maximum value, using the Crash characteristics representated by the maximum value selected as the protrusion accident of signal control cross level-crossing
Form.
Specific embodiment two：Present embodiment shows one kind two described in embodiment one signal control cross plane
The protrusion Crash characteristics recognition methods of intersection is further limited, and the step two in present embodiment is specially：
Single vehicle accident occurrence condition：Single car occurs at the intersection, and just there are one the machines that bicycle itself accident occurs
Meeting；
The accident chance number of bicycle itself accident of two display signal control cross level-crossings is equal to 1 year in 1 year
The interior vehicle fleet into intersection, calculation formula are：
Wherein, O1The accident chance number of cross level-crossing bicycle itself accident is controlled for two display signals in 1 year；qi
The vehicle of the entrance i of cross level-crossing is controlled averagely to reach number, the value range of unit pcu/h, i for two display signals
It is 1~4, and entrance 1 and entrance 3 are opposite inlet, entrance 2 is opposite inlet with entrance 4.
Specific embodiment three：Illustrate present embodiment with reference to Fig. 2, present embodiment is to one kind described in embodiment two
The protrusion Crash characteristics recognition methods of two display signal control cross level-crossings is further limited, in present embodiment
The step of three be specially：
Rear-end collision occurrence condition：Two vehicle travel directions are identical and two vehicles appear at intersection；
The computational methods of the accident chance number of the rear-end collision of entrance 1 are as follows：
(1) the accident chance number of the rear-end collision between straight traffic
The average time that 1 through vehicles of entrance pass through intersection is:The vehicle of vehicle
Away from quantum condition entropy is met during head, when the time headway t of two arrival vehicles is less thanWhen, there is the thing that knocks into the back between two vehicles
Therefore chance, the probability that accident occurs isL13For opposite inlet 1 and 3 at the intersection
Length, l1For the link length of intersection entrance 1 or entrance 3, W2For the road width of entrance 2, unit is rice；To enter
The average speed of 1 through vehicles of mouth, unit are thousand ms/hour；
Then two display signals control 1 straight traffic of entrance of cross level-crossings that the accident of rear-end collision occurs in 1 year
Chance number：
Wherein, q1The vehicle of the entrance 1 of cross level-crossing is controlled averagely to reach number for two display signals, unit is
pcu/h；ps1The straight traffic ratio of the entrance 1 of cross level-crossing is controlled for two display signals；For two display in 1 year
The accident chance number of rear-end collision occurs for the straight traffic of the entrance 1 of signal control cross level-crossing.
(2) the rear-end collision chance number between left turn traffic and right-hand rotation wagon flow
The left turning vehicle of entrance 1 and the running orbit length of right-turning vehicles are respectivelyAnd l1+l2,
Then obtain in 1 year knocking into the back between right-turning vehicles between the left turning vehicle of the entrance 1 of two display signals control cross level-crossings
The accident chance number of accident：
Wherein, l2For the link length of intersection entrance 2 or entrance 4, W1For the road width of entrance 1, unit is rice；
pl1And pr1The left turning vehicle of respectively two display signal control cross level-crossing entrances 1 and the ratio of right-turning vehicles；The left turning vehicle and right-turning vehicles of respectively two display signal control cross level-crossing entrances 1 are by intersection
When average speed, unit be thousand ms/hour；WithTwo display signal control cross level-crossing in respectively 1 year
The accident chance number of rear-end collision occurs for the left turn traffic and right-hand rotation wagon flow of mouth entrance 1；
WhereinRange beWithWithTwo display signals control cross is represented respectively to put down
The average speed that 1 through vehicles of face intersection entrance, left turning vehicle and right-turning vehicles pass through intersection；sj1Range be ss1、sl1
And sr1, ss1、sl1And sr1Two display signals control cross level-crossing entrance, 1 through vehicles, left turning vehicle and the right side are represented respectively
The running orbit length changed trains or buses through intersection；dj1Range be ds1、dl1And dr1, ds1、dl1And dr1Two displays are represented respectively
1 through vehicles of signal control cross level-crossing entrance, left turning vehicle and right-turning vehicles during intersection because of signal by producing
Raw mean delay；V1For the average speed for the vehicle that entrance 1 reaches, unit is thousand ms/hour；
The accident chance number of the rear-end collision of the entrance 1 of two display signal control cross level-crossings is in 1 year：
The accident chance number O of rear-end collision that two display signal control cross level-crossings occur in 1 year2For：
Wherein,The rear-end collision of the entrance i generations of cross level-crossing is controlled for two display signals in 1 year
Accident chance number.
Specific embodiment four：Illustrate present embodiment with reference to Fig. 3, present embodiment is to one kind described in embodiment three
The protrusion Crash characteristics recognition methods of two display signal control cross level-crossings is further limited, in present embodiment
The step of four be specially：
Head-on collision accident occurrence condition：Two vehicle Facing Movements and two vehicles are at the intersection；
A certain vehicle on the Through Lane near road axis of entrance 1, when the vehicle is with speedPass through friendship
During prong, on the Through Lane near road axis of opposite entrance 3 head-on sail come each vehicle between all deposit
In the chance that head-on collision accident occurs, the calculation formula of the accident chance number of the head-on collision accident is：
Wherein,For the average space headway of 3 straight traffic of entrance, unit is rice；3 through vehicles of entrance are averaged
Speed, unit are thousand ms/hour；q3The vehicle of entrance 3 for two display signalized crossings averagely reaches number, unit pcu/
h；ps3Straight traffic ratio for two display signalized crossing entrances 3；m3Number of lanes for entrance 3；
The accident machine of head-on collision accident occurs for the entrance 1 of two display signal control cross level-crossings and entrance 3 in 1 year
Number is：
Wherein,Control the entrance 1 of cross level-crossing and entrance 3 that head-on collision thing occurs for two display signals in 1 year
Therefore accident chance number, m1Number of lanes for entrance 1；
Similarly, the entrance 2 of two display signal control cross level-crossings and entrance 4 in 1 year are calculated, head-on collision thing occurs
Therefore accident chance number
Then the accident chance number of the head-on collision accident of two display signal control cross level-crossings generations is in 1 year：
Wherein, O3The accident chance of head-on collision accident that cross level-crossing occurs is controlled for two display signals in 1 year
Number.
Specific embodiment five：Illustrate present embodiment with reference to Fig. 4, present embodiment is to one kind described in embodiment four
The protrusion Crash characteristics recognition methods of two display signal control cross level-crossings is further limited, in present embodiment
The step of five be specially：
Angular impact accident occurrence condition:It is happened between left-hand rotation vehicle and opposite straight traffic；
(1) the accident chance number of I types angular impact accident
During the straight traffic that neutral gear passes through opposite entrance 3 is passed through in the left-hand rotation vehicle utilization of entrance 1, the straight trip of entrance 3
There is the machine that angular impact occurs between first vehicle of wagon flow or the first car and each left turning vehicle for the straight traffic being truncated
Meeting, this angular impact accident are I type angular impact accidents；
The left-hand rotation vehicle of entrance 1 is all by intersection, then two display signals control entering for cross level-crossings in 1 year
The chance number of mouthful 1 I type angular impact accidents is
(2) the accident chance number of II types angular impact accident
Before the straight traffic of opposite entrance 3 occurs passing through neutral gear, first vehicle of left-hand rotation vehicle that the waiting of entrance 1 is passed through
There is the chance that angular impact accident occurs between each straight traffic crossed with opposite entrance 3, this angular impact accident is II
Type angular impact accident；
Then in 1 year two display signals control cross level-crossings entrance 1 II type angular impact accidents accident chance
Number is：Left-hand rotation vehicle all by opposite straight traffic before, opposite straight traffic by vehicle number subtract left-hand rotation vehicle and passing through opposite direction
Required average neutral gear number during straight traffic；
Opposite straight traffic it is each pass through neutral gear can by the average value E (n) of left turning vehicle number be：
Wherein, τ passes through the critical of opposite straight traffic for left-hand rotation vehicle and passes through neutral gear value, and t is the time span for passing through neutral gear,
Pn(t) to pass through the probability that n vehicle is crossed in neutral gear t, t is more than τ；N is to pass through the vehicle number crossed in neutral gear t；λs3For entrance 3
Straight traffic average arrival rate per second, λs3=q3ps3/3600；T0The left-hand rotation vehicle continuously crossed in neutral gear t is passed through to be same
Time headway between；
Left-hand rotation vehicle passes through the average neutral gear number needed during opposite straight trafficFor q1pl1/E(n)；Left-hand rotation vehicle is every
The secondary average queuing time that opposite straight traffic is waited for occur passing through neutral gear needs is：
Wherein, u (t) represents the probability density for passing through time dead length t that left-hand rotation vehicle passes through opposite straight traffic；λ0Generation
Table left-hand rotation vehicle passes through the inverse of average neutral gear number needed during opposite straight traffic, and value is
Wherein h (t) is the time headway probability density of opposite straight traffic；The length in c representation signal periods, unit s；t1rRepresent into
The red time of mouth 1, unit s；
In the left-hand rotation vehicle stand-by period opposite straight traffic by vehicle number be：
The accident chance of II type angular impact accidents occurs for the entrance 1 of two display signal control cross level-crossings in 1 year
Number is：
The accident chance number of angular impact accident that the entrance 1 of two display signal control cross level-crossings occurs in 1 year
For：
The accident chance number of the angular impact accident of two display signal control cross level-crossings generations is in 1 year：
Wherein,The angular impact accident that the entrance i of cross level-crossing occurs is controlled for two display signals in 1 year
Accident chance number, O4The accident chance of angular impact accident that cross level-crossing occurs is controlled for two display signals in 1 year
Number.
Specific embodiment six：Illustrate present embodiment with reference to Fig. 5, present embodiment is to one kind described in embodiment five
The protrusion Crash characteristics recognition methods of two display signal control cross level-crossings is further limited, in present embodiment
The step of six be specially：
Scraping accident occurrence condition in the same direction：The two cars that are travelled in the same direction on adjacent lane while in intersection, and
The vehicle body of two vehicles has part side by side；
The accident chance number of scraping accident in the same direction occurs on two adjacent Through Lanes of entrance 1：By two adjacent straights of entrance 1
Runway is denoted as a and b respectively, wherein the Vehicle Speed in each track is respectivelyWithAndWhen b tracks
On each car be driven out to intersection during, surmount the vehicle number of this vehicle in b tracks on a tracks, as b tracks this
The accident chance number of scraping accident in the same direction occurs with the vehicle on a tracks for vehicle；When a vehicle is driven out to intersection in b tracks, a vehicles
The relative spacing △ l of headstock and the tailstock of this vehicle for surmounting the first car of this vehicle on road are
As △ l>2l0When, wherein, l0For standard vehicle commander；The vehicle number for surmounting this vehicle on a tracks is
The accident chance number that scraping accident in the same direction then occurs in 1 year on b tracks on vehicle and a tracks between vehicle is：
As △ l ＜ 2l0When, the accident machine of scraping accident in the same direction occurs in 1 year on a tracks on vehicle and b tracks between vehicle
Number is：
Every a pair of of the adjacent lane for calculating the entrance 1 of two display signal control cross level-crossings in 1 year respectively is sent out
The accident chance number of raw scraping accident in the same direction, then be overlapped, obtain two display signal control cross level-crossing in 1 year
The accident chance number of scraping accident in the same direction that occurs of entrance 1 be：
Wherein, m1Represent total number of track-lines of entrance 1；K represents k-th of track of entrance 1；
The accident chance number of the scraping accident in the same direction of generation is in two display signal control cross level-crossings in 1 year：
Wherein,The entrance i of cross level-crossing is controlled to occur to scrape thing in the same direction for two display signals in 1 year
Therefore accident chance number；O5The accident of scraping accident in the same direction that cross level-crossing occurs is controlled for two display signals in 1 year
Chance number.
Specific embodiment seven：Illustrate present embodiment with reference to Fig. 6, present embodiment is to one kind described in embodiment six
The protrusion Crash characteristics recognition methods of two display signal control cross level-crossings is further limited, in present embodiment
The step of seven be specially：
Right angle collision accident occurrence condition：The travel direction of two vehicles is at a right angle, and two vehicles are in intersection together；
The accident chance number of right angle collision accident occurs for the entrance 1 of two display signal control cross level-crossings in 1 year
For：
Wherein, m2Represent the number of lanes of entrance 2, ps2It is the ratio of the through vehicles of entrance 2, pl2It is the left-hand rotation of entrance 2
The ratio of vehicle；m4Represent the number of lanes of entrance 4, ps4It is the ratio of the through vehicles of entrance 4, pl4It is the left-hand rotation vehicle of entrance 4
Ratio；
The accident chance number of the right angle collision accident of two display signal control cross level-crossings generations is in 1 year：
Wherein,Control the entrance i of cross level-crossing that right angle collision accident occurs for two display signals in 1 year
Accident chance number；O6The accident machine of right angle collision accident that cross level-crossing occurs is controlled for two display signals in 1 year
It can number.
Specific embodiment eight：Present embodiment shows one kind two described in embodiment seven signal control cross plane
The protrusion Crash characteristics recognition methods of intersection is further limited, and the step eight in present embodiment is specially：
Using the urban road investigated in step 1, some two display signal is controlled in cross level-crossings every year
The accident number N of itself accident of the bicycle occurred1, rear-end collision accident number N2, head-on collision accident accident number N3, tiltedly
The accident number N of collision accident4, scraping accident in the same direction accident number N5With the accident number N of right angle collision accident6, utilize step
Bicycle itself accident that two displays signal control cross level-crossing occurs in rapid two 1 years calculated to step 7
Accident chance number O1, rear-end collision accident chance number O2, head-on collision accident accident chance number O3, angular impact accident accident machine
It can number O4, scraping accident in the same direction accident chance number O5With the accident chance number O of right angle collision accident6；
The accident risk of each Crash characteristics is calculated according to the following formula：
Wherein, the value of j is 1,2,3,4,5 and 6.
Specific embodiment nine：Present embodiment shows one kind two described in embodiment eight signal control cross plane
The protrusion Crash characteristics recognition methods of intersection is further limited, and the step nine in present embodiment is specially：
R in comparison step eight1、R2、R3、R4、R5And R6Size, select R1、R2、R3、R4、R5And R6In maximum value,
RIt is prominent=max { R1,R2,R3,R4,R5,R6}
By R1、R2、R3、R4、R5And R6In maximum value as this two display signal control cross level-crossing protrusion
The accident risk R of Crash characteristicsIt is prominent。
Identify two display signalized crossings protrusion Crash characteristics, in order to propose below targetedly, have
The Improvement for traffic safety of effect.
Embodiment
The traffic accident between motor vehicle is considered in the urban signal controlling intersection of the present invention, does not control and hands over including signal
The traffic accident between Manpower Transportation accident, non-motor vehicle and motor vehicle in prong.
The two display signal control main Crash characteristics of cross level-crossing have six kinds：Bicycle itself accident, knock into the back thing
Therefore head-on collision accident, angular impact accident, scraping accident in the same direction and right angle collision accident, it is defined as follows：
Bicycle itself accident：Refer to single car overturn in intersection, with fixation means bump against, or both it is simultaneous
Accident.
Rear-end collision：Refer to single car (to put aside herein from the vehicle tail for knocking another stagnation of movement or slow below
The situation of more vehicle continuous rear collisions).
Head-on collision accident：Refer to a vehicle and opposite direction sails the head-on impact accident occurred between another vehicle come.Although having
In the case of a little, the result that this kind of accident occurs may be opposite scraping or angular impact, it is considered as head-on collision accident herein.
Angular impact accident：Refer to the collision accident of an automobile-used another vehicle side (on-right angle) of head-on crash.In two displays
In signal control plane intersection, the type accident occurs mainly in left-hand rotation vehicle and passes through during opposite straight traffic.
Scraping accident in the same direction：Between referring to the vehicle that is travelled on same direction adjacent lane, because a wherein vehicle drive into it is another
Track (or violating the regulations change another track) and the side scraping accident occurred.
Right angle collision accident：Refer in the range of intersection, the collision accident occurred between the vehicle travelled at right angles to each other, including
Right angle head-on impact and right-angle side collision.
For typical two display signal control cross level-crossings, following parameter interpretation is done to related data：
Geometrical condition parameter
As shown in fig. 7, opposite entrance 1 is equal with the road width of entrance 3, the road of opposite entrance 2 and entrance 4 is had a lot of social connections
Spend equal, i.e. W1=W3, W2=W4；Opposite entrance 1 is equal with the number of lanes of entrance 3, the vehicle of opposite entrance 2 and entrance 4
Road number is equal, i.e. m1=m3, m2=m4；The length of opposite inlet at the intersection is respectively L13=2l1+W2, L24=2l2+W1。
Traffic signalization conditional parameter
Using two display control modes, signal period a length of c, unit s；Entrance i (i=1,2,3,4) straight trip, turn left and
The mean delay that each car of right-hand rotation generates due to signal is dsi、dliAnd dri, unit s.
Traffic flow conditional parameter
The average arrival rate of entrance i (i=1,2,3,4) vehicle is qi, unit is pcu/h, entrance i (i=1,2,3,4) vehicle
Average speed be Vi, unit is thousand ms/hour, and entrance i (i=1,2,3,4) reaches straight trip, left-hand rotation and the right-hand rotation vehicle ratio of vehicle
Example is respectively pri、psiAnd pli。l1For the link length of intersection entrance 1 or entrance 3, l2For intersection entrance 2 or entrance 4
Link length；And vehicle all passes through intersection, no delay vehicle in green time.
The flow chart of the present embodiment is as shown in Figure 1, two display signal control cross level-crossing schematic diagram such as Fig. 8 institutes
Show, the present embodiment specifically includes following steps：
(1) investigation urban road two shows that the number of accident occurs for signal control cross level-crossing Common Accidents form
Amount, road geometrical condition data, traffic signalization data and traffic flow data；
30 traffic accidents have occurred in 1 year altogether on the two display signal control cross level-crossings of the present embodiment.Its
In, bicycle itself accident, rear-end collision, head-on collision accident, angular impact accident, scraping accident in the same direction, each 5 of right angle collision accident.
Intersection shows the intersection of signal control, a length of 60 seconds of signal period for single-point two.
Opposite inlet A is equal with the road width of C, and A and the C number of lanes of opposite inlet are 2, and opposite inlet is in intersection
The length at place is 16 meters, and entrance A is equal with the average speed of entrance C, is 33.8km/h.It has a lot of social connections in the road of opposite inlet B and D
Spend equal, the number of lanes of opposite inlet is 2, and the length of opposite inlet at the intersection is 16 meters, entrance B and entrance D's
Average speed is equal, is 31.05km/h.The coverage of intersection is 35 meters.Entrance A, B, C and D's is averaged per hour
The volume of traffic is respectively 1840pcu/h, 1230pcu/h, 1793pcu/h and 1316pcu/h, and the left-hand rotation vehicle ratio of each entrance is
0.2, straight traffic ratio is 0.7, and right-hand rotation vehicle ratio is 0.1.
(2) the accident chance number of six kinds of Common Accidents forms of two display signal control cross level-crossings is calculated：
1. the chance number of bicycle itself accident：
O1=8760 × (1840+1230+1793+1316)=54.13 × 106(secondary)
Then the accident chance number of two display signal control cross level-crossings generation bicycle itself accidents is in 1 year
54.13×106It is secondary；
2. the accident chance number of rear-end collision：
The accident chance number of rear-end collision occurs in 1 year for entrance A
It can similarly obtain, the accident chance number of rear-end collision occurs in 1 year for entrance B
It can similarly obtain, the accident chance number of rear-end collision occurs in 1 year for entrance C
It can similarly obtain, the accident chance number of rear-end collision occurs in 1 year for entrance D
Then the accident chance numbers of rear-end collisions occurs for two display signals control cross level-crossings in 1 year：
3. the accident chance number of the accident of head-on collision：
The accident chance number of head-on collision accident occurs in 1 year between entrance A and entrance C：
The accident chance number of head-on collision accident occurs in 1 year between entrance B and entrance D：
Then the accident chance numbers of head-on collision accidents occurs for two display signals control cross level-crossings in 1 year：
4. the chance number of angular impact accident：
The accident chance number of angular impact accident occurs in 1 year for entrance A
It can similarly obtain, the accident chance number of angular impact accident occurs in 1 year for entrance B
It can similarly obtain, the accident chance number of angular impact accident occurs in 1 year for entrance C
It can similarly obtain, the accident chance number of angular impact accident occurs in 1 year for entrance D
Then the accident chance numbers of angular impact accidents occurs for two display signals control cross level-crossings in 1 year：
5. the accident chance number of scraping accident in the same direction：
The accident chance number of scraping accident in the same direction occurs in 1 year for entrance A
The accident chance number of scraping accident in the same direction occurs in 1 year for entrance B
The accident chance number of scraping accident in the same direction occurs in 1 year for entrance C
The accident chance number of scraping accident in the same direction occurs in 1 year for entrance D
Then the accident chance numbers of scraping accidents in the same direction occurs for two display signals control cross level-crossings in 1 year：
6. the chance number of right angle collision accident：
The accident chance number of right angle collision accident occurs in 1 year for entrance A
The accident chance number of right angle collision accident occurs in 1 year for entrance B
The accident chance number of right angle collision accident occurs in 1 year for entrance C
The accident chance number of right angle collision accident occurs in 1 year for entrance D
Then the accident chance numbers of right angle collision accidents occurs for two display signals control cross level-crossings in 1 year：
(3) the accident wind that above six kinds of Common Accidents forms occur for two display signal control cross level-crossings is calculated
Danger：1. the accident risk of bicycle itself accident：
2. the accident risk of rear-end collision：
3. the accident risk of the accident of head-on collision：
4. the accident risk of angular impact accident：
5. the accident risk of scraping accident in the same direction：
6. the accident risk of right angle collision accident：
Wherein, N1、N2、N3、N4、N5And N6Respectively urban road two shows signal control in step 1 investigate 1 year
Bicycle itself accident of cross level-crossing processed, rear-end collision, head-on collision accident, angular impact accident, scraping accident in the same direction and straight
The actual accidents number of corner impact Crash characteristics.
(4) the protrusion Crash characteristics of the two displays signal control cross level-crossing are identified：
RIt is prominent=max { R1,R2,R3,R4,R5,R6}=max { 0.09,0.09,52.08,0.23,0.27,0.04 }=52.08
The accident risk size of six kinds of Crash characteristics of cross level-crossing is controlled by comparing the two displays signal, from
And identify the Crash characteristics of accident risk maximum as prominent Crash characteristics.Most prominent Crash characteristics in the embodiment are pair
Accident is hit, is secondly scraping accident in the same direction and angular impact accident respectively.
The protrusion Crash characteristics of two display signals control cross level-crossing are identified, to propose specific traffic peace
Full Improving Measurements help to improve the level of security of urban signal controlling level-crossing.
Beneficial effects of the present invention are verified using following embodiment below：
The present embodiment it is a kind of two display signal control cross level-crossing protrusion Crash characteristics method be specifically according to
Prepared by following steps：
This example is by taking a or two display signal control cross level-crossing of Harbin City's urban road as an example, according to this hair
Bright purpose and geometry linear condition, traffic signalization condition and the traffic flow condition of combination intersection, to dashing forward in intersection
The Crash characteristics gone out are identified.The six kinds of common crossing accident form chance number calculation formula and thing given according to the present invention
Therefore Risk Calculation formula, the accident risk size of each Crash characteristics can be obtained.Compare the accident risk size of six kinds of Crash characteristics,
Obtain the larger Crash characteristics of accident risk, the protrusion Crash characteristics as intersection.The accident shape protruded for the intersection
State and propose specific, targetedly Improvement for traffic safety below, so as to further improve existing two displays signal control ten
The general safety of word level-crossing is horizontal.
Studies show that, using the present invention, " two display signal control cross level-crossings protrude the knowledge of Crash characteristics
Other method ", and take targetedly Improving Measurements, it is contemplated that the 30% of accident quantity will be reduced, intersection delay declines 28%, hands over
Prong entirety traffic efficiency improves 24%.Therefore method using the present invention will be helpful to quickly identify that two display phases are handed over
Prong protrudes Crash characteristics, proposes effective, targetedly traffic improvement measure, so as to further improve existing two displays signal phase
The whole traffic safety of position cross junction is horizontal.
From embodiment：
(1) there are 6 kinds of common Crash characteristics for two display signal control cross level-crossings of urban road, respectively
For bicycle itself accident, rear-end collision, head-on collision accident, angular impact accident, scraping accident in the same direction and right angle collision accident；
(2) although 6 kinds of Common Accidents forms of the At-grade intersection be 1 year 5, due to different accidents
The chance of occurrence number of form has larger difference, and therefore, the accident risk size of 6 kinds of Common Accidents forms is simultaneously different；
(3) for the two displays signal control cross level-crossing, most prominent Crash characteristics are head-on collision accident,
Secondly it is respectively scraping accident in the same direction and angular impact accident.
Application prospect and prospect：
The computational methods of the three display signal control various Crash characteristics chance of occurrence numbers of cross level-crossing and two displays
Signal control is essentially identical, but because employing the control of left-hand rotation special signal, therefore does not consider further that angular impact chance number and right angle collision
In as the part chance number caused by left-hand rotation vehicle.Signal controls T shapes level-crossing compared with cross level-crossing, various
The analysis calculating process of the chance of occurrence number of Crash characteristics is substantially the same, but due to its specific geometrical condition and vehicle operation side
Formula, part Crash characteristics feature have differences with cross level-crossing, and the main distinction is right angle collision accident and angular impact
Accident.In addition, since present invention employs " accident risk are theoretical ", which can be applied to the real-time of future
The accident risk assessment of signalized crossing further improves the traffic safety management level and service quality of intersection.
The present invention can also have other various embodiments, without deviating from the spirit and substance of the present invention, this field
Technical staff makes various corresponding changes and deformation in accordance with the present invention, but these corresponding changes and deformation should all belong to
The protection domain of appended claims of the invention.
Claims (9)
1. a kind of protrusion Crash characteristics recognition methods of two displays signal control cross level-crossing, which is characterized in that described
Two display signals control cross level-crossings the recognition methods of protrusion Crash characteristics through the following steps that realize：
Step 1: investigate and count casualty data, the road geometry of some two display signal control cross level-crossing of city
Condition data, traffic signalization data and traffic flow data；
Step 2: calculate the accident chance number of two displays signal control cross level-crossing bicycle itself accident；
Step 3: calculate the accident chance number of the two displays signal control cross level-crossing rear-end collision；
Step 4: calculate the accident chance number of the two displays signal control cross level-crossing head-on collision accident；
Step 5: calculate the accident chance number of the two displays signal control cross level-crossing angular impact accident；
Step 6: calculate the accident chance number of the two displays signal control cross level-crossing scraping accident in the same direction；
Step 7: calculate the accident chance number of the two displays signal control cross level-crossing right angle collision accident；
Step 8: some two display signal is controlled in cross level-crossings often using the urban road investigated in step 1
The accident number N of bicycle itself accident that year has occurred1, rear-end collision accident number N2, head-on collision accident accident number N3、
The accident number N of angular impact accident4, scraping accident in the same direction accident number N5With the accident number N of right angle collision accident6, utilize
Bicycle itself accident that two displays signal control cross level-crossing occurs in step 2 to step 7 calculate 1 year
Accident chance number O1, rear-end collision accident chance number O2, head-on collision accident accident chance number O3, angular impact accident accident
Chance number O4, scraping accident in the same direction accident chance number O5With the accident chance number O of right angle collision accident6；Calculate respectively this two
Show the accident risk R of signal control cross level-crossing bicycle itself accident1, rear-end collision accident risk R2, head-on collision thing
Therefore accident risk R3, angular impact accident accident risk R4, scraping accident in the same direction accident risk R5With right angle collision accident
Accident risk R6；
Step 9: R in comparison step eight1、R2、R3、R4、R5And R6Size, select R1、R2、R3、R4、R5And R6In maximum
Value, using the Crash characteristics representated by the maximum value selected as the protrusion accident shape of signal control cross level-crossing
State.
2. the protrusion Crash characteristics recognition methods of two displays signal control cross level-crossing according to claim 1,
It is characterized in that, the detailed process of the step 2 is：
Single vehicle accident occurrence condition：Single car occurs at the intersection, and just there are one the chances that bicycle itself accident occurs；
In 1 year two display signals control cross level-crossings bicycle itself accident accident chance number be equal to 1 year in into
Enter the vehicle fleet of intersection, calculation formula is：
Wherein, O1The accident chance number of cross level-crossing bicycle itself accident is controlled for two display signals in 1 year；qiIt is two
The vehicle of the entrance i of display signal control cross level-crossing averagely reaches number, and the value range of unit pcu/h, i are 1
~4, and entrance 1 and entrance 3 are opposite inlet, entrance 2 is opposite inlet with entrance 4.
3. the protrusion Crash characteristics recognition methods of two displays signal control cross level-crossing according to claim 2,
It is characterized in that, the detailed process of the step 3 is：
Rear-end collision occurrence condition：Two vehicle travel directions are identical and two vehicles appear at intersection；
The computational methods of the accident chance number of the rear-end collision of entrance 1 are as follows：
(1) the accident chance number of the rear-end collision between straight traffic
The average time that 1 through vehicles of entrance pass through intersection is:The vehicle of vehicle
Away from quantum condition entropy is met during head, when the time headway t of two arrival vehicles is less thanWhen, there is the thing that knocks into the back between two vehicles
Therefore chance, the probability that accident occurs isL13It is opposite inlet 1 and 3 in intersection
The length at place, l1For the link length of intersection entrance 1 or entrance 3, W2For the road width of entrance 2, unit is rice；For
The average speed of 1 through vehicles of entrance, unit are thousand ms/hour；
Then two display signals control 1 straight traffic of entrance of cross level-crossings that the accident chance of rear-end collision occurs in 1 year
Number：
Wherein, q1The vehicle of the entrance 1 of cross level-crossing is controlled averagely to reach number, unit pcu/h for two display signals；
ps1The straight traffic ratio of the entrance 1 of cross level-crossing is controlled for two display signals；For two display signal control in 1 year
The accident chance number of rear-end collision occurs for the straight traffic of the entrance 1 of cross level-crossing processed.
(2) the rear-end collision chance number between left turn traffic and right-hand rotation wagon flow
The left turning vehicle of entrance 1 and the running orbit length of right-turning vehicles are respectivelyAnd l1+l2, then
Obtain the thing that knocks into the back between the left turning vehicle of the entrance 1 of two display signal control cross level-crossings between right-turning vehicles in 1 year
Therefore accident chance number：
Wherein, l2For the link length of intersection entrance 2 or entrance 4, W1For the road width of entrance 1, unit is rice；pl1With
pr1The left turning vehicle of respectively two display signal control cross level-crossing entrances 1 and the ratio of right-turning vehicles； Point
Not Wei two display signals control cross level-crossing entrances 1 left turning vehicle and right-turning vehicles by intersection when average speed
Degree, unit are thousand ms/hour；WithA left side for two display signal control cross level-crossing entrances 1 in respectively 1 year
Change trains or buses to flow and right-hand rotation wagon flow occur rear-end collision accident chance number；
WhereinRange beWithWithTwo display signals control cross plane is represented respectively to hand over
The average speed that 1 through vehicles of prong entrance, left turning vehicle and right-turning vehicles pass through intersection；sj1Range be ss1、sl1With
sr1, ss1、sl1And sr1Two display signals control cross level-crossing entrance, 1 through vehicles, left turning vehicle and right-hand rotation are represented respectively
The running orbit length that vehicle passes through intersection；dj1Range be ds1、dl1And dr1, ds1、dl1And dr1Two displays letter is represented respectively
Number 1 through vehicles of control cross level-crossing entrance, left turning vehicle and right-turning vehicles during intersection because of signal by generating
Mean delay；V1For the average speed for the vehicle that entrance 1 reaches, unit is thousand ms/hour；
The accident chance number of the rear-end collision of the entrance 1 of two display signal control cross level-crossings is in 1 year：
The accident chance number O of rear-end collision that two display signal control cross level-crossings occur in 1 year2For：
Wherein, Oi It knocks into the backThe accident machine of rear-end collision that the entrance i of cross level-crossing occurs is controlled for two display signals in 1 year
It can number.
4. the protrusion Crash characteristics recognition methods of two displays signal control cross level-crossing according to claim 3,
It is characterized in that, the detailed process of the step 4 is：
Head-on collision accident occurrence condition：Two vehicle Facing Movements and two vehicles are at the intersection；
A certain vehicle on the Through Lane near road axis of entrance 1, when the vehicle is with speedPass through intersection
When, on the Through Lane near road axis of opposite entrance 3 head-on sail come each vehicle between all exist send out
The chance of raw head-on collision accident, the calculation formula of the accident chance number of the head-on collision accident are：
Wherein,For the average space headway of 3 straight traffic of entrance, unit is rice；The average speed of 3 through vehicles of entrance,
Unit is thousand ms/hour；q3Vehicle for two display signalized crossing entrances 3 averagely reaches number, unit pcu/h；ps3For
The straight traffic ratio of two display signalized crossing entrances 3；m3Number of lanes for entrance 3；
The accident chance number of head-on collision accident occurs for the entrance 1 of two display signal control cross level-crossings and entrance 3 in 1 year
For：
Wherein,Control the entrance 1 of cross level-crossing and entrance 3 that head-on collision accident occurs for two display signals in 1 year
Accident chance number, m1Number of lanes for entrance 1；
Similarly, the entrance 2 of two display signal control cross level-crossings and entrance 4 in 1 year are calculated, head-on collision accident occurs
Accident chance number
Then the accident chance number of the head-on collision accident of two display signal control cross level-crossings generations is in 1 year：
Wherein, O3The accident chance number of head-on collision accident that cross level-crossing occurs is controlled for two display signals in 1 year.
5. the protrusion Crash characteristics recognition methods of two displays signal control cross level-crossing according to claim 4,
It is characterized in that, the detailed process of the step 5 is：
Angular impact accident occurrence condition:It is happened between left-hand rotation vehicle and opposite straight traffic；
(1) the accident chance number of I types angular impact accident
During the straight traffic that neutral gear passes through opposite entrance 3 is passed through in the left-hand rotation vehicle utilization of entrance 1, the straight traffic of entrance 3
First vehicle or the straight traffic being truncated first car and each left turning vehicle between exist occur angular impact chance, this
Kind angular impact accident is I type angular impact accidents；
The left-hand rotation vehicle of entrance 1 is all by intersection, then the entrance 1 of two display signals control cross level-crossings in 1 year
The chance number of I type angular impact accidents is
(2) the accident chance number of II types angular impact accident
Before the straight traffic of opposite entrance 3 occurs passing through neutral gear, first vehicle of the left-hand rotation vehicle that the waiting of entrance 1 is passed through with it is right
There is the chance that angular impact accident occurs between each straight traffic crossed to entrance 3, this angular impact accident is oblique for II types
Collision accident；
Then in 1 year two display signals control cross level-crossings entrance 1 II type angular impact accidents accident chance number
For：Left-hand rotation vehicle all by opposite straight traffic before, opposite straight traffic by vehicle number subtract left-hand rotation vehicle passing through it is opposite straight
Required average neutral gear number during driving stream；
Opposite straight traffic it is each pass through neutral gear can by the average value E (n) of left turning vehicle number be：
Wherein, τ is that left-hand rotation vehicle passes through the critical of opposite straight traffic and passes through neutral gear value, and t is the time span for passing through neutral gear, Pn(t)
The probability of n vehicle is crossed to pass through in neutral gear t, t is more than τ；N is to pass through the vehicle number crossed in neutral gear t；λs3For the straight of entrance 3
It drives a vehicle average arrival rate per second, λs3=q3ps3/3600；T0It is passed through between the left turning vehicle continuously crossed in neutral gear t to be same
Time headway；
Left-hand rotation vehicle passes through the average neutral gear number needed during opposite straight trafficFor q1pl1/E(n)；Left-hand rotation vehicle is per inferior
Treat that the average queuing time that neutral gear needs occurs passing through in opposite straight traffic is：
Wherein, u (t) represents the probability density for passing through neutral gear time span t that left-hand rotation vehicle passes through opposite straight traffic；When opposite straight
When time headway between driving stream is less than τ, λ0It represents left-hand rotation vehicle and passes through the average neutral gear number needed during opposite straight traffic
Inverse, value isWherein h (t) is the time headway probability density of opposite straight traffic；C is represented
The length of signal period, unit s；t1rRepresent the red time of entrance 1, unit s；
In the left-hand rotation vehicle stand-by period opposite straight traffic by vehicle number be：
The accident chance number of II type angular impact accidents occurs for the entrance 1 of two display signal control cross level-crossings in 1 year
For：
The accident chance number of the angular impact accident of the generation of entrance 1 of two display signal control cross level-crossings is in 1 year：
The accident chance number of the angular impact accident of two display signal control cross level-crossings generations is in 1 year：
Wherein,The thing of angular impact accident that the entrance i of cross level-crossing occurs is controlled for two display signals in 1 year
Therefore chance number, O4The accident chance number of angular impact accident that cross level-crossing occurs is controlled for two display signals in 1 year.
6. the protrusion Crash characteristics recognition methods of two displays signal control cross level-crossing according to claim 5,
It is characterized in that, the detailed process of the step 6 is：
Scraping accident occurrence condition in the same direction：The two cars that are travelled in the same direction on adjacent lane while in intersection, and two vehicles
Vehicle body have part side by side；
The accident chance number of scraping accident in the same direction occurs on two adjacent Through Lanes of entrance 1：By the two of entrance 1 adjacent straight traffics
Road is denoted as a and b respectively, wherein the Vehicle Speed in each track is respectivelyWithAndWhen on b tracks
During each car is driven out to intersection, surmount the vehicle number of this vehicle in b tracks on a tracks, as this vehicle in b tracks with
The accident chance number of scraping accident in the same direction occurs for the vehicle on a tracks；When a vehicle is driven out to intersection in b tracks, on a tracks
The relative spacing △ l of headstock and the tailstock of this vehicle for surmounting the first car of this vehicle are
As △ l>2l0When, wherein, l0For standard vehicle commander；The vehicle number for surmounting this vehicle on a tracks isThen one
The accident chance number that scraping accident in the same direction occurs in year on b tracks on vehicle and a tracks between vehicle is：
As △ l<2l0When, the accident chance number of scraping accident in the same direction occurs in 1 year on a tracks on vehicle and b tracks between vehicle
For：
Every a pair of of the adjacent lane generation for calculating the entrance 1 of two display signal control cross level-crossings in 1 year respectively is same
It to the accident chance number of scraping accident, then is overlapped, obtains two display signals in 1 year and control entering for cross level-crossings
The accident chance number of mouthful 1 scraping accident in the same direction occurred is：
Wherein, m1Represent total number of track-lines of entrance 1；K represents k-th of track of entrance 1；
The accident chance number of the scraping accident in the same direction of generation is in two display signal control cross level-crossings in 1 year：
Wherein,Control the entrance i of cross level-crossing that scraping accident in the same direction occurs for two display signals in 1 year
Accident chance number；O5The accident chance of scraping accident in the same direction that cross level-crossing occurs is controlled for two display signals in 1 year
Number.
7. the protrusion Crash characteristics recognition methods of two displays signal control cross level-crossing according to claim 6,
It is characterized in that, the detailed process of the step 7 is：
Right angle collision accident occurrence condition：The travel direction of two vehicles is at a right angle, and two vehicles are in intersection together；
The accident chance number of the generation right angle collision accident of entrance 1 of two display signal control cross level-crossings is in 1 year：
Wherein, m2Represent the number of lanes of entrance 2, ps2It is the ratio of the through vehicles of entrance 2, pl2It is the left turning vehicle of entrance 2
Ratio；m4Represent the number of lanes of entrance 4, ps4It is the ratio of the through vehicles of entrance 4, pl4It is the left turning vehicle of entrance 4
Ratio；
The accident chance number of the right angle collision accident of two display signal control cross level-crossings generations is in 1 year：
Wherein,Control the entrance i of cross level-crossing that the thing of right angle collision accident occurs for two display signals in 1 year
Therefore chance number；O6The accident chance of right angle collision accident that cross level-crossing occurs is controlled for two display signals in 1 year
Number.
8. the protrusion Crash characteristics recognition methods of two displays signal control cross level-crossing according to claim 7,
It is characterized in that, the detailed process of the step 8 is：
Using the urban road investigated in step 1 some two display signals control cross level-crossings in sent out every year
The accident number N of itself accident of raw bicycle1, rear-end collision accident number N2, head-on collision accident accident number N3, angular impact
The accident number N of accident4, scraping accident in the same direction accident number N5With the accident number N of right angle collision accident6, utilize step 2
The accident of bicycle itself accident that two displays signal control cross level-crossing occurs in 1 year calculated to step 7
Chance number O1, rear-end collision accident chance number O2, head-on collision accident accident chance number O3, angular impact accident accident chance number
O4, scraping accident in the same direction accident chance number O5With the accident chance number O of right angle collision accident6；
The accident risk of each Crash characteristics is calculated according to the following formula：
Wherein, the value of j is 1,2,3,4,5 and 6.
9. the protrusion Crash characteristics recognition methods of two displays signal control cross level-crossing according to claim 8,
It is characterized in that, the detailed process of the step 9 is：
R in comparison step eight1、R2、R3、R4、R5And R6Size, select R1、R2、R3、R4、R5And R6In maximum value,
RIt is prominent=max { R1,R2,R3,R4,R5,R6}
By R1、R2、R3、R4、R5And R6In maximum value as this two display signal control cross level-crossing protrusion accident
The accident risk R of formIt is prominent。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810069930.0A CN108198423B (en) | 2018-01-24 | 2018-01-24 | Method for recognizing salient accident form of crossroad controlled by two display signals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810069930.0A CN108198423B (en) | 2018-01-24 | 2018-01-24 | Method for recognizing salient accident form of crossroad controlled by two display signals |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108198423A true CN108198423A (en) | 2018-06-22 |
| CN108198423B CN108198423B (en) | 2020-09-08 |
Family
ID=62591082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810069930.0A Expired - Fee Related CN108198423B (en) | 2018-01-24 | 2018-01-24 | Method for recognizing salient accident form of crossroad controlled by two display signals |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108198423B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111009125A (en) * | 2019-12-17 | 2020-04-14 | 武汉理工大学 | Urban intersection pedestrian and vehicle collision probability calculation method |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6662141B2 (en) * | 1995-01-13 | 2003-12-09 | Alan R. Kaub | Traffic safety prediction model |
| CN101751782A (en) * | 2009-12-30 | 2010-06-23 | 北京大学深圳研究生院 | Crossroad traffic event automatic detection system based on multi-source information fusion |
| CN103198710A (en) * | 2013-03-21 | 2013-07-10 | 东南大学 | Vehicle regulating and controlling method based on reduction of vehicle rear-end collision accident number |
| CN103198708A (en) * | 2013-03-21 | 2013-07-10 | 东南大学 | Vehicle regulating and controlling method of lowering probability of lateral impact traffic accidents |
| CN104392076A (en) * | 2014-12-16 | 2015-03-04 | 东南大学 | Urban road network pedestrian traffic accident black spot identification method |
| CN104732075A (en) * | 2015-03-06 | 2015-06-24 | 中山大学 | Real-time prediction method for urban road traffic accident risk |
| CN105551251A (en) * | 2016-01-19 | 2016-05-04 | 华南理工大学 | No-signalized-intersection motor vehicle conflict probability determining method |
| CN106485922A (en) * | 2016-12-20 | 2017-03-08 | 东南大学 | Secondary traffic accident method for early warning based on high accuracy traffic flow data |
| US9779621B1 (en) * | 2013-03-15 | 2017-10-03 | Waymo Llc | Intersection phase map |
-
2018
- 2018-01-24 CN CN201810069930.0A patent/CN108198423B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6662141B2 (en) * | 1995-01-13 | 2003-12-09 | Alan R. Kaub | Traffic safety prediction model |
| CN101751782A (en) * | 2009-12-30 | 2010-06-23 | 北京大学深圳研究生院 | Crossroad traffic event automatic detection system based on multi-source information fusion |
| US9779621B1 (en) * | 2013-03-15 | 2017-10-03 | Waymo Llc | Intersection phase map |
| CN103198710A (en) * | 2013-03-21 | 2013-07-10 | 东南大学 | Vehicle regulating and controlling method based on reduction of vehicle rear-end collision accident number |
| CN103198708A (en) * | 2013-03-21 | 2013-07-10 | 东南大学 | Vehicle regulating and controlling method of lowering probability of lateral impact traffic accidents |
| CN104392076A (en) * | 2014-12-16 | 2015-03-04 | 东南大学 | Urban road network pedestrian traffic accident black spot identification method |
| CN104732075A (en) * | 2015-03-06 | 2015-06-24 | 中山大学 | Real-time prediction method for urban road traffic accident risk |
| CN105551251A (en) * | 2016-01-19 | 2016-05-04 | 华南理工大学 | No-signalized-intersection motor vehicle conflict probability determining method |
| CN106485922A (en) * | 2016-12-20 | 2017-03-08 | 东南大学 | Secondary traffic accident method for early warning based on high accuracy traffic flow data |
Non-Patent Citations (3)
| Title |
|---|
| ZHANG TIEJUN;TANG CHENGCHENG;KANG YUNXIA: "Predicting accident frequency at their severity levels and its application in site ranking using a two-stage mixed multivariate model", 《JOURNAL OF HIGHWAY AND TRANSPORTATION RESEARCH AND DEVELOPMENT》 * |
| 孟祥海: "规划阶段城市干道网潜在事故多发点鉴别及改善研究", 《中国优秀博士学位论文全文数据库（工程科技Ⅱ辑）》 * |
| 成卫: "城市道路交通事故与交通冲突技术理论模型及方法研究", 《中国优秀博士学位论文全文数据库（工程科技Ⅱ辑）》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111009125A (en) * | 2019-12-17 | 2020-04-14 | 武汉理工大学 | Urban intersection pedestrian and vehicle collision probability calculation method |
| CN111009125B (en) * | 2019-12-17 | 2021-01-15 | 武汉理工大学 | Urban intersection pedestrian and vehicle collision probability calculation method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108198423B (en) | 2020-09-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107798868B (en) | A kind of signalized intersections u-turn opening bit selecting method that traffic flow composition influences | |
| CN102912700B (en) | Improving method for dark spot in accident at exit ramp of expressway based on retro-reflection illumination | |
| CN103198680B (en) | Green wave coordination control method for multiline | |
| CN101603294B (en) | Method for joint design of colorized traffic sign and marked lines at intersection of urban road | |
| CN105279977A (en) | Stretched Intersection and Signal Warning System | |
| CN108447256A (en) | Trunk road vehicle trajectory reconstruction method based on electric police and fixed point detector data fusion | |
| EP3418158B1 (en) | Steering control device for trackless train and control method therefor | |
| Goh et al. | Road safety benefits from bus priority: an empirical study | |
| CN110009918A (en) | A kind of single-point intersection public transportation lane signal control optimization method | |
| CN107067766A (en) | Put pre-signal control method in a kind of intersection bus left-hand rotation right side | |
| CN106781555B (en) | A kind of signalized intersections for setting double left turn lanes reverse end for end region design method | |
| CN106683449A (en) | Dynamic green-light interval time adjustment method of traffic control system under vehicular access cooperation environment | |
| CN106971569A (en) | The signal priority control method at intersection moment is reached based on prediction tramcar | |
| Currie et al. | Success and challenges in modernizing streetcar systems: Experiences in Melbourne, Australia, and Toronto, Canada | |
| CN105133450B (en) | A kind of intersection tune region design method that central authorities' isolation guardrail is set | |
| CN106530763A (en) | Supersaturation traffic adaptive signal control method with coupling of inlet flow and outlet flow | |
| CN110379183A (en) | It is a kind of for alleviating the system and method for crossing traffic congestion | |
| CN109559499A (en) | Vehicle platoon traveling management platform, control method and car-mounted terminal | |
| CN107293135A (en) | A kind of crossing self-adapting vehicle U-turn at intersection traffic guidance system and control method | |
| CN107037436A (en) | In a kind of train and its travel direction obstacle spacing from detection method | |
| CN108198423A (en) | A kind of protrusion Crash characteristics recognition methods of two displays signal control cross level-crossing | |
| CN106530722B (en) | A kind of double left turn lane traffic capacity computational methods of signalized intersections for setting u-turn to be open | |
| CN203844749U (en) | Vehicle fork road segment detection device | |
| CN105931472A (en) | Signal intersection leading pedestrian interval calculation method | |
| CN114049763A (en) | Analysis method for advanced turning of vehicles at intersection |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200908 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |