CN110390815A - Determine that the multiple tachymeters of through street combine the method influenced on traffic accident quantity - Google Patents

Determine that the multiple tachymeters of through street combine the method influenced on traffic accident quantity Download PDF

Info

Publication number
CN110390815A
CN110390815A CN201910591810.1A CN201910591810A CN110390815A CN 110390815 A CN110390815 A CN 110390815A CN 201910591810 A CN201910591810 A CN 201910591810A CN 110390815 A CN110390815 A CN 110390815A
Authority
CN
China
Prior art keywords
point
tachymeters
reference point
experimental
accident quantity
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.)
Pending
Application number
CN201910591810.1A
Other languages
Chinese (zh)
Inventor
李豪杰
朱曼曼
张子乾
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Southeast University
Original Assignee
Southeast University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Southeast University filed Critical Southeast University
Priority to CN201910591810.1A priority Critical patent/CN110390815A/en
Publication of CN110390815A publication Critical patent/CN110390815A/en
Pending legal-status Critical Current

Links

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
    • 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
    • G08G1/052—Detecting movement of traffic to be counted or controlled with provision for determining speed or overspeed

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Traffic Control Systems (AREA)

Abstract

The invention discloses a kind of tachymeters for determining through street different number to combine the method influenced on traffic accident quantity, includes the following steps: the selection of (1) score model and parameter calibration；(2) pre- reference point ratio selection and data acquisition；(3) determination of reference point；(4) traffic accident quantity surveying；(5) judge impact effect.The invention has the benefit that combining the reference point with similar variation tendency with tachymeter by choosing, the traffic accident quantity within the scope of the certain radius of experimental point and reference point is investigated respectively, the accident quantity of the two variation front and back is compared and analyzed based on " Double deference estimation model ", it solves the influence of traffic accident transfer characteristic to a certain extent, can accurately assess influence of the combination installation of multiple tachymeters to traffic accident quantity.

Description

Determine that the multiple tachymeters of through street combine the method influenced on traffic accident quantity
Technical field
The present invention relates to road traffic technical field, especially a kind of multiple tachymeter combinations of judgement through street are to traffic The method that accident quantity influences.
Background technique
With the development of the social economy, national life level significantly improves, social car ownership is risen year by year, while by In the complex characteristics of roadnet operation, the quantity that traffic accident occurs also gradually increases, and how to reduce traffic accident Become the research focus of field of traffic in recent years.Roadnet is a complicated system, by " road people-Che-- environment " four A subsystem forms, and again includes various factors in each subsystem, and the variation of each factor environment all may cause friendship The generation of interpreter's event.It counts according to relevant traffic casualty data it is found that wherein since driver takes incorrect driving behavior Cause traffic accident to account for very big ratio, such as arbitrarily changes lane, drives over the speed limit.Related research for this problem It is proposed that on running section installation fixed point tachymeter carries out the driving behavior of real time monitoring driver, it is maximized reduce due to The quantity of traffic accident caused by incorrect driving behavior.
Either in scientific research field or patent application field, the combination of few multiple tachymeters of judgement is to traffic The influence of accident quantity, the research such as in terms of patent for tachymeter and road accident often concentrate on tachymeter to section Monitoring and information acquisition, or have been directed to influence of the single tachymeter to traffic accident quantity；In terms of scientific research, judgement Influence of the tachymeter to traffic accident quantity usually using single tachymeter as research object, and would generally take " front and back comparison Study (before-and-after) ", i.e., the data after data and installation before being installed by single tachymeter compare, But this method lacks the transfer characteristic for considering traffic accident, and does not account between single tachymeter and the other tachymeters of surrounding Interaction and influence each other, so there are identical places do not have in different moments data collected it is representative and comparable The drawbacks of property.
Summary of the invention
Technical problem to be solved by the present invention lies in provide a kind of combination of judgement multiple tachymeters of through street to friendship The method that interpreter's event quantity influences, can accurately assess influence of the installation of multiple tachymeters to traffic accident quantity.
In order to solve the above technical problems, the present invention provides a kind of multiple tachymeters combinations of judgement through street to traffic accident The method that quantity influences, includes the following steps:
(1) score model selection and parameter calibration:
Taking logit model is primary standard model, introduces variable and carries out constructing new fractional value model, comprehensive by calculating Close the determining reference point to experimental point with similar variation tendency of scoring event；CFSCBefore the multiple fixed point tachymeters of expression installation extremely Fatal and Serious conflicts accident quantity, C in 3 years fewPICCasualties at least 3 years before the multiple fixed point tachymeters of expression installation Collision Number, introducing variables D indicates that the research radius of fixed point tachymeter, R indicate that the combination radius of multiple fixed point tachymeters is D Link length summation in range, I indicate that the combination radius of multiple fixed point tachymeters is the intersection quantity within the scope of D, and J is indicated The combination radius of multiple fixed point tachymeters is the road turning point quantity within the scope of D, and D is between 200-1000 meters.α is constant Item, βnA fixed point tachymeter is only mounted with for regression vector coefficient, T=0 expression；
(2) pre- reference point ratio selection and data acquisition:
The sample proportion for choosing pre- reference point and experimental point is 1:1.5~1:30；It is preferred that 1:10, determines pre- reference point ratio Later, investigation and investigation acquisition road area radius length L, fatal and Serious conflicts accident quantity FSCS, casualties collision Accident number PICS, link length summation R, intersection quantity I, road turnover points J, per day magnitude of traffic flow V, Road breadth Degree W, road track number N, whether there is or not central partition F data；
(3) determination of reference point:
Sample data collected each in (2) step are brought into the model of building, corresponding comprehensive score situation is calculated, Finally determining reference point score value should be closest to the score value of experimental point；Calculate the difference of pre- reference point Yu experimental point score value Value γi, therefore the γ of final identified reference point and experimental pointiValue meets γi=min | experimental subjects fractional value-is in advance referring to right As value | }；
(4) traffic accident quantity surveying:
Investigation initial time is the uninstalled time t of multiple tachymeters0, accident number within the scope of experimental point zone radius Measure H0t, accident quantity H within the scope of reference point zone radius0c；Multiple tachymeters, which have been installed, implements time t1, experimental point region Actual accidents quantity in radius is H1t, the accident quantity within the scope of reference point zone radius is H1c；
(5) judge impact effect:
It has been installed in multiple tachymeters and has implemented time t1When, it is assumed that Experimental Area is only mounted with a fixed point tachymeter institute The traffic accident quantity of generation is H'1t, then through street installs multiple fixed point tachymeters to the impact effect of accident quantity are as follows:
Hdid=(H1t-H1c)-(H'1t-H1c)=(H1t-H0c)-(H0t-H0c)
The present invention is by choosing the reference point same radius area for having similar variation tendency to practical tachymeter installation region The traffic accident quantity of Experimental Area and reference area is investigated in domain respectively, before being changed the two based on " Double deference estimation model " Accident quantity afterwards compares and analyzes, and solves the influence of traffic accident transfer characteristic to a certain extent, can be compared with subject to The influence of the true multiple tachymeters of assessment being mounted within the scope of certain radius to traffic accident quantity.
Detailed description of the invention
Fig. 1 is that experimental subjects and reference object accident quantity of the invention change schematic diagram.
Fig. 2 is method flow schematic diagram of the invention.
Specific embodiment
As illustrated in fig. 1 and 2, a method of determining that one group of tachymeter of through street influences traffic accident quantity, including Following steps:
(1) score model selection and parameter calibration:
Taking logit model is primary standard model, introduces variable and carries out constructing new fractional value model, comprehensive by calculating Close the determining reference point to experimental point with similar variation tendency of scoring event；CFSCBefore the multiple fixed point tachymeters of expression installation extremely Fatal and Serious conflicts accident quantity, C in 3 years fewPICCasualties at least 3 years before the multiple fixed point tachymeters of expression installation Collision Number, R indicate that the combination radius of multiple fixed point tachymeters is the link length summation within the scope of D, and I indicates that multiple fixed points test the speed The combination radius of instrument is the intersection quantity within the scope of D, and J indicates that the combination radius of multiple fixed point tachymeters is the road within the scope of D Road turning point quantity, α are constant term, βnA fixed point tachymeter is only mounted with for regression vector coefficient, T=0 expression；
(2) pre- reference point ratio selection and data acquisition:
The sample proportion for choosing pre- reference point and experimental point is 1:1.5~1:30；After determining pre- reference point ratio, investigation Road area radius length L, fatal and Serious conflicts accident quantity FSC are acquired with investigationS, casualties collision accident number PICS、 Link length summation R, intersection quantity I, road turnover points J, per day magnitude of traffic flow V, road Road width W, terrain vehicle Road number N, whether there is or not central partition F data；
(3) determination of reference point:
Sample data collected each in (2) step are brought into the model of building, corresponding comprehensive score situation is calculated, Finally determining reference point score value should be closest to the score value of experimental point；Calculate the difference of pre- reference point Yu experimental point score value Value γi, therefore the γ of final identified reference point and experimental pointiValue meets γi=min | experimental subjects fractional value-is in advance referring to right As value | }；
(4) traffic accident quantity surveying:
Investigation initial time is the uninstalled time t of multiple tachymeters0, accident number within the scope of experimental point zone radius Measure H0t, accident quantity H within the scope of reference point zone radius0c；Multiple tachymeters, which have been installed, implements time t1, experimental point region Actual accidents quantity in radius is H1t, the accident quantity within the scope of reference point zone radius is H1c；
(5) judge impact effect:
It has been installed in multiple tachymeters and has implemented time t1When, it is assumed that Experimental Area is only mounted with a fixed point tachymeter institute The traffic accident quantity of generation is H'1t, then through street installs multiple fixed point tachymeters to the impact effect of accident quantity are as follows:
Hdid=(H1t-H1c)-(H'1t-H1c)=(H1t-H0c)-(H0t-H0c)
Illustrate the present invention with specific embodiment below.
1) Object Selection: the sample proportion for choosing experimental point and reference point is 1:10, and wherein sample for reference is marked as b2、b3、 b4、b5、b6、b7、b8、b9、b10、b11, experimental point sample is b1。
2) variable data acquires: being investigated by accurate investigation method and relevant departments, obtains each experimental point and ginseng According to point related data as shown in table 1-1.
Table 1-1 sample data acquires statistical form
Sample number L FSCS PICS V R I J W N F
b1 L1 n1 k1 V1 R1 I1 J1 W1 N1 1
b2 L2 n2 k2 V2 R2 I2 J2 W2 N2 1
b3 L3 n3 k3 V3 R3 I3 J3 W3 N3 0
b4 L4 n4 k4 V4 R4 I4 J4 W4 N4 0
b5 L5 n5 k5 V5 R5 I5 J5 W5 N5 0
b6 L6 n6 k6 V6 R6 I6 J6 W6 N6 1
b7 L7 n7 k7 V7 R7 I7 J7 W7 N7 1
b8 L8 n8 k8 V8 R8 I8 J8 W8 N8 0
b9 L9 n9 k9 V9 R9 I9 J9 W9 N9 0
b10 L10 n10 k10 V10 R10 I10 J10 W10 N10 1
b11 L11 n11 k11 V11 R11 I11 J11 W11 N11 1
3) fractional value calculates: the data acquired in the 2) step are brought into respectively in the logit model of building, obtain each group Corresponding scoring event, experimental subjects fractional value are a1, the fractional value of reference object is respectively a2、a3、a4、a5、a6、a7、a8、a9、 a10、a11, with experimental group a1For calculating process it is as follows, the similarly corresponding calculated value a of reference group finally2、a3、a4、a5、 a6、a7、a8、a9、a10、a11。
4) reference object determines: the 3) experimental point score value calculated and pre- reference object score value carry out difference in step Analysis, the γ of reference point and experimental pointiValue meets γi=min | experimental subjects fractional value-pre- reference object value | }, each group reference It is as shown in the table to be worth calculated result.
Table 1-2 reference point calculated result statistical form
By comparing calculation value as a result, the shortest reference point of selected distance is final reference point, this case verification is assumed It carries out under ideal conditions, and γ2=min | experimental subjects fractional value-pre- reference object value | }, therefore final reference object determines For b2。
5) the accident quantity q of the experimental point before multiple tachymeters are not installed and reference point is investigated respectively0、u0；Multiple high speeds The corresponding accident quantity q of the two after video camera is respectively mounted1、u1, as shown in the table., D is between 200-1000 meters.
Table 1-3 accident quantity statistics table
Object Before multiple tachymeters are not installed After multiple tachymeters have been installed
Radius is the region of D around reference point q0 q1
Radius is the region of D around experimental point u0 u1
6) by the above-mentioned experimental procedure of this patent it is found that institute following to accident impact effect after the installation of multiple tachymeters Show:
Hdid=(u1-q1)-(u0-q0)
Although the present invention is illustrated and has been described with regard to preferred embodiment, it is understood by those skilled in the art that Without departing from scope defined by the claims of the present invention, variations and modifications can be carried out to the present invention.

Claims (3)

1. a kind of method that the combination for determining the multiple tachymeters of through street influences traffic accident quantity, which is characterized in that packet Include following steps:
(1) score model selection and parameter calibration:
Taking logit model is primary standard model, introduces variable and carries out constructing new fractional value model, comprehensive by calculating Divide situation the determining reference point to experimental point with similar variation tendency:
In formula: CFSCFatal at least 3 years and Serious conflicts accident quantity before multiple fixed point tachymeters, C are installed in expressionPICIt indicates Casualties Collision Number at least 3 years is installed before multiple fixed point tachymeters, introducing variables D indicates the research area of fixed point tachymeter Domain radius, R indicate that the combinations of multiple fixed point tachymeters in radius are the link length summation within the scope of D, and I indicates the surveys of multiple fixed points The combination radius of fast instrument is the intersection quantity within the scope of D, and J indicates that the combination radius of multiple fixed point tachymeters is within the scope of D Road turning point quantity, α are constant term, βnA fixed point tachymeter is only mounted with for regression vector coefficient, T=0 expression；
(2) pre- reference point ratio selection and data acquisition:
The sample proportion for choosing pre- reference point and experimental point is 1:1.5~1:30；After determining pre- reference point ratio, investigation and tune Look into acquisition road area radius length L, fatal and Serious conflicts accident quantity FSCS, casualties collision accident number PICS, road Length summation R, intersection quantity I, road turnover points J, per day magnitude of traffic flow V, road Road width W, road track number N, whether there is or not central partition F data；
(3) determination of reference point:
Sample data collected each in (2) step are brought into the model constructed in step (1), corresponding comprehensive score is calculated Situation, finally determining reference point score value should be closest to the score value of experimental point；Calculate pre- reference point and experimental point score The difference γ of valuei, therefore the γ of final identified reference point and experimental pointiValue meets:
γi=min | experimental subjects fractional value-pre- reference object value | }；
(4) traffic accident quantity surveying:
Investigation initial time is the uninstalled time t of multiple tachymeters0, accident quantity within the scope of experimental point zone radius H0t, accident quantity H within the scope of reference point zone radius0c；Multiple tachymeters, which have been installed, implements time t1, experimental point region half Actual accidents quantity within the scope of diameter is H1t, the accident quantity within the scope of reference point zone radius is H1c；
(5) judge impact effect:
It has been installed in multiple tachymeters and has implemented time t1When, it is assumed that Experimental Area is only mounted with that a fixed point tachymeter is occurred Traffic accident quantity be H'1t, then through street installs multiple fixed point tachymeters to the impact effect of accident quantity are as follows:
Hdid=(H1t-H1c)-(H'1t-H1c)=(H1t-H0c)-(H0t-H0c)。
2. the method that the combination of the multiple tachymeters of through street influences traffic accident quantity is determined as described in claim 1, It is characterized in that, the sample proportion in step (2) is determined as 1:10.
3. the method that the combination of the multiple tachymeters of through street influences traffic accident quantity is determined as described in claim 1, It is characterized in that, the D in step (1) is between 200-1000 meters.
CN201910591810.1A 2019-07-01 2019-07-01 Determine that the multiple tachymeters of through street combine the method influenced on traffic accident quantity Pending CN110390815A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910591810.1A CN110390815A (en) 2019-07-01 2019-07-01 Determine that the multiple tachymeters of through street combine the method influenced on traffic accident quantity

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910591810.1A CN110390815A (en) 2019-07-01 2019-07-01 Determine that the multiple tachymeters of through street combine the method influenced on traffic accident quantity

Publications (1)

Publication Number Publication Date
CN110390815A true CN110390815A (en) 2019-10-29

Family

ID=68286042

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910591810.1A Pending CN110390815A (en) 2019-07-01 2019-07-01 Determine that the multiple tachymeters of through street combine the method influenced on traffic accident quantity

Country Status (1)

Country Link
CN (1) CN110390815A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111984924A (en) * 2020-07-07 2020-11-24 东南大学 Method for evaluating influence of public bicycle leasing policy on regional bicycle safety
CN112509336A (en) * 2020-11-20 2021-03-16 公安部交通管理科学研究所 Method for analyzing deterrence range of single-point speed measuring equipment on highway

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1196494A (en) * 1997-09-22 1999-04-09 Hitachi Ltd Method for monitoring traffic flow and device therefor
JP2005284983A (en) * 2004-03-30 2005-10-13 Toen Kk Apparatus and method for accident preventive warning due to traffic disorder
CN102163368A (en) * 2010-05-10 2011-08-24 陈勃生 System and method for identifying and monitoring unsafe driving behavior
CN203351038U (en) * 2013-06-28 2013-12-18 博隆建亚科技(北京)有限公司 Vehicle velocity measurement system
CN106485919A (en) * 2016-10-11 2017-03-08 东南大学 A kind of method for judging that through street fixed point tachymeter is affected on traffic accident quantity
CN106600969A (en) * 2016-12-19 2017-04-26 安徽百诚慧通科技有限公司 Intelligent road comprehensive prevention and control method and system
CN107895502A (en) * 2017-12-19 2018-04-10 安徽省徽腾智能交通科技有限公司 A kind of smart city intelligent transportation guides system
CN108711281A (en) * 2018-03-23 2018-10-26 武汉理工大学 A method of with section actual driving speed data evaluation Highway Safety
CN108961789A (en) * 2017-05-21 2018-12-07 温州云航信息科技有限公司 Traffic prewarning suggestion device and information early warning reminding method
CN109146299A (en) * 2018-08-29 2019-01-04 广东工业大学 A kind of intersection secure state evaluating method

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1196494A (en) * 1997-09-22 1999-04-09 Hitachi Ltd Method for monitoring traffic flow and device therefor
JP2005284983A (en) * 2004-03-30 2005-10-13 Toen Kk Apparatus and method for accident preventive warning due to traffic disorder
CN102163368A (en) * 2010-05-10 2011-08-24 陈勃生 System and method for identifying and monitoring unsafe driving behavior
CN203351038U (en) * 2013-06-28 2013-12-18 博隆建亚科技(北京)有限公司 Vehicle velocity measurement system
CN106485919A (en) * 2016-10-11 2017-03-08 东南大学 A kind of method for judging that through street fixed point tachymeter is affected on traffic accident quantity
CN106600969A (en) * 2016-12-19 2017-04-26 安徽百诚慧通科技有限公司 Intelligent road comprehensive prevention and control method and system
CN108961789A (en) * 2017-05-21 2018-12-07 温州云航信息科技有限公司 Traffic prewarning suggestion device and information early warning reminding method
CN107895502A (en) * 2017-12-19 2018-04-10 安徽省徽腾智能交通科技有限公司 A kind of smart city intelligent transportation guides system
CN108711281A (en) * 2018-03-23 2018-10-26 武汉理工大学 A method of with section actual driving speed data evaluation Highway Safety
CN109146299A (en) * 2018-08-29 2019-01-04 广东工业大学 A kind of intersection secure state evaluating method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111984924A (en) * 2020-07-07 2020-11-24 东南大学 Method for evaluating influence of public bicycle leasing policy on regional bicycle safety
CN112509336A (en) * 2020-11-20 2021-03-16 公安部交通管理科学研究所 Method for analyzing deterrence range of single-point speed measuring equipment on highway
CN112509336B (en) * 2020-11-20 2022-03-25 公安部交通管理科学研究所 Method for analyzing deterrence range of single-point speed measuring equipment on highway

Similar Documents

Publication Publication Date Title
CN106485919B (en) A method of determining that through street fixed point tachymeter influences traffic accident quantity
Laureshyn et al. Cross-comparison of three surrogate safety methods to diagnose cyclist safety problems at intersections in Norway
WO2018064931A1 (en) Method for estimating travel time distribution of taxi on urban roads when operating states of taxis are considered
Farah et al. Risk evaluation by modeling of passing behavior on two-lane rural highways
Kay et al. Driver behavior during bicycle passing maneuvers in response to a Share the Road sign treatment
CN110910636A (en) Vehicle abnormal turning behavior analysis method based on mass traffic data analysis
Chen et al. Impact of combined alignments on lane departure: A simulator study for mountainous freeways
DE102016210453A1 (en) Vehicle, system in communication with a communication module of the vehicle, and system in communication with a group of vehicles
CN109712398B (en) Expressway travel time estimation model parameter optimization method
CN110390815A (en) Determine that the multiple tachymeters of through street combine the method influenced on traffic accident quantity
CN107067729A (en) A kind of urban road traffic safety state evaluating method
Sacchi et al. Accounting for heterogeneity among treatment sites and time trends in developing crash modification functions
CN110867075B (en) Method for evaluating influence of road speed meter on reaction behavior of driver under rainy condition
CN105046963B (en) The critical value calculating method of overpass road section traffic volume congestion based on traffic parent map
Azizi et al. Estimation of freeway platooning measures using surrogate measures based on connected vehicle data
Dixon et al. Field evaluation of highway capacity manual 2000 analysis procedures for two-lane highways
DE102019216435A1 (en) Traffic information service system and traffic information service system
Weinert Estimation of critical gaps and follow-up times at rural unsignalized intersections in Germany
Wang et al. Transferability analysis of the freeway continuous speed model
Ruškić et al. Estimation of left-turn capacity at the unsignalized intersection
Wiklund et al. Traffic safety and economic fluctuation: long-term and short-term analyses and a literature survey
Shichrur et al. Determining the sampling time frame for in-vehicle data recorder measurement in assessing drivers
Saha et al. Evaluation of performance measures of two-lane highways under heterogeneous traffic
Xu et al. Interchange deceleration lane design based on naturalistic driving speeds and deceleration rates
Cartes et al. Effect of driving style on operating speed in crest vertical curves of two-lane highways

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
RJ01 Rejection of invention patent application after publication

Application publication date: 20191029

RJ01 Rejection of invention patent application after publication