CN106971540B - The behaviorist risk quantization method of driver under freeway tunnel environment - Google Patents
The behaviorist risk quantization method of driver under freeway tunnel environment Download PDFInfo
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- G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
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Abstract
The invention belongs to traffic safety technical fields, the behaviorist risk quantization method of driver under open freeway tunnel environment, comprising: subjectivity expected speed of the every driver of acquisition by the real-time speed of corresponding speed sampled point when tunnel portal section, tunnel driving section, tunnel outlet section, common fastlink as the driver；Several drivers are obtained in the 50 quartile speeds in each section；Safe maximum permissable speed, the minimum safe speed in each section is calculated；According to the safe maximum permissable speed in each section, minimum safe speed, objective security speed is obtained；Pass through the subjectivity expected speed, objective security speed at each section corresponding speed sampled point according to each driver, obtain accident-free vehicle speed difference of each driver at each section corresponding speed sampled point, behaviorist risk quantizating index as corresponding driver, accident-free vehicle speed difference at corresponding speed sampled point is bigger, indicates that behaviorist risk of the driver at corresponding road section speed sampling point is higher.
Description
Technical field
The invention belongs to drivers under traffic safety technical field more particularly to a kind of freeway tunnel environment
Behaviorist risk quantization method.
Background technique
As the specific gravity that tunnel construction accounts for Freeway Foundation construction is increasing, the traffic safety problem of accompanying this
It becomes increasingly conspicuous.Casualty data shows that tunnel import and export section traffic accident distribution is most, total accounting nearly 70%, and rear-end collision
Accounting nearly 55%, severity of injuries is apparently higher than open route section.And influence in the factors of traffic safety, driver because
Element accounts for 93% of total number of accident or so.Since tunnel geometric space structure is special, inside and outside light environment difference is obvious, driver in
Tunnel driving need to undergo multiple vision light and dark adaptation process, which not only will affect physiology and Psychology and behavior, further result in
Driving behavior changes, or even phenomenon to lose control of one's vehicle occurs.In the road people-Che-- environment collaborative feedback system, road safety assessment
Substantive content be the evaluation of driver's behaviorist risk, behaviorist risk value reduces, and accident probability is remarkably decreased, and road safety is then
It is obviously improved.Driving behavior index is chosen, driver's behaviorist risk quantization method is proposed, tunnel drive the cross is measured and judged with this
Behaviorist risk in journey changes key position point, improves tunnel safety facility to reach, instructs the purpose of road safety design.
The existing research about tunnel safety lays particular emphasis on the analysis of the road static elements based on empirical statistics, has ignored and drives
Sail the dynamic variation characteristic of behavior, the fresh influence for paying close attention to driver's Subjective less, even if in view of driver's risk perceptions are special
Property influence, but do not carry out train experiment, suitable behavioral indicator selected to analyse in depth.
Summary of the invention
It is an object of the invention to overcome above-mentioned the deficiencies in the prior art, provides and driven under a kind of freeway tunnel environment
The behaviorist risk quantization method of people, this method can predict driver's behaviorist risk in real time, thus in actual tunnel safety devices
In placement process, it is contemplated that the safety precautions of its corresponding connection and reasonable arrangement of behaviorist risk value mutation point, meanwhile, it goes for driving
Also there is certain application value for the optimization of warning system.
The present invention is, from microcosmic angle, to analyze influence of the tunnel environment to traffic safety to drive artificial core.Speed
As the central representations of driving behavior characteristic, it can preferably reflect that driving is expected and supply situation with road environment, be to measure to drive
Sail one of the important indicator of degree of risk.Therefore, the present invention is mentioned by analyzing train experiment speed data collected
Driver's behaviorist risk quantization method based on accident-free vehicle speed difference, this method can drive through super long tunnel section to driver out
It is analyzed with the behaviorist risk of common fastlink.
In order to achieve the above objectives, the present invention is realised by adopting the following technical scheme.
The behaviorist risk quantization method of driver under a kind of freeway tunnel environment, described method includes following steps:
Step 1, it is assumed that there are several drivers to test, acquire every driver and driven a vehicle by tunnel portal section, tunnel
The real-time speed of corresponding speed sampled point when section, tunnel outlet section, common fastlink, and each speed sampling point is corresponding
The real-time speed is as the corresponding subjective expected speed of each speed sampling point of the driver；
Step 2, the several drivers are obtained to drive a vehicle section in 50 quartile speeds of the tunnel portal section, the tunnel
50 quartile speeds of 50 quartile speeds, 50 quartile speeds of the tunnel outlet section and common fastlink；
Step 3, the safe maximum permissable speed of the tunnel driving section, 50 quartile speeds of tunnel driving section are obtained, from
And the safe maximum permissable speed of the safe maximum permissable speed of the tunnel portal section, the tunnel outlet section is calculated；
Step 4, the minimum safe speed for obtaining the common fastlink, according to the minimum peace of the common fastlink
The minimum safe speed, described of the tunnel portal section is calculated in full speed, 50 quartile speeds of the common fastlink
Minimum safe speed, the minimum safe speed of the tunnel outlet section of tunnel driving section；
Step 5, according to the safe maximum permissable speed of the tunnel portal section, the minimum safe speed of the tunnel portal section,
Obtain the objective security speed of the tunnel portal section；
According to the safe maximum permissable speed of tunnel driving section, the minimum safe speed of tunnel driving section, institute is obtained
State the objective security speed of tunnel driving section；
According to the minimum safe speed of the safe maximum permissable speed of the tunnel outlet section, the tunnel outlet section, institute is obtained
State the objective security speed of tunnel outlet section；
According to the minimum safe speed of the safe maximum permissable speed of the common fastlink, the common fastlink, obtain
To the objective security speed of the common fastlink；
Step 6, tunnel portal section, tunnel driving section, tunnel outlet section, common fastlink are passed through according to each driver
When corresponding speed sampling point position at the expected speed of subjectivity, it is the tunnel portal section, tunnel driving section, tunnel outlet section, general
The objective security speed of logical fastlink obtains each driver in the tunnel portal section, tunnel driving section, tunnel exit
Accident-free vehicle speed difference when section, common fastlink at corresponding speed sampling point position, and using the accident-free vehicle speed difference as correspondence
Driver's corresponding speed sampling point position in the tunnel portal section, tunnel driving section, tunnel outlet section, common fastlink
The behaviorist risk quantizating index at place；And the accident-free vehicle speed difference is bigger, indicates driver's sample when to corresponding
The behaviorist risk for setting place is higher.
Technical solution of the present invention advantage is the expected speed of the subjectivity for considering driver, and combines objective environment accident-free vehicle
Speed constructs the quantization method of Real-Time Evaluation driver's behaviorist risk, and this method is more accurate, comprehensive, and is easy on practical road
It is operated in section safety evaluation.After this method, visitor of implementable assessment driver during tunnel and common high speed traveling
It serve as a lookout danger, driver's risk behavior warning system is optimized, reducing road traffic accident has important value.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the behaviorist risk quantization method of driver under a kind of freeway tunnel environment provided in an embodiment of the present invention
Flow diagram.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The behaviorist risk quantization method of driver under a kind of freeway tunnel environment, as shown in Figure 1, the method includes
Following steps:
Step 1, it is assumed that there are several drivers to test, acquire every driver and driven a vehicle by tunnel portal section, tunnel
The real-time speed of corresponding speed sampled point when section, tunnel outlet section, common fastlink, and each speed sampling point is corresponding
Real-time speed is as the corresponding subjective expected speed of each speed sampling point of the driver.
Specifically, multiple speed are arranged in tunnel portal section, tunnel driving section, tunnel outlet section, common fastlink respectively
Sampled point is spent, each driver is recorded by the real-time speed at corresponding speed sampling point position.
Tunnel described in the embodiment of the present invention refers to that length is at least 1000 meters or more of super long tunnel.
With reference to " vcehicular tunnel design specification " (JTG D70-2004) (JTG D70/2-2014) and " Route Design rule
Model " (JTG D20-2006), division super long tunnel section is entrance, driving section and outlet section.Wherein, tunnel portal section is by entering
300 meters and enter 300 meters behind tunnel face of section composition before tunnel face, the tunnel outlet section is by going out before tunnel face 300 meters and going out
300 meters of section composition behind tunnel face, tunnel driving section refer into tunnel face after 300 meters with 300 meters before tunnel face out
Between section.
The expected speed of subjectivity is the speed of operation that driver is determined by perception current driving environment, i.e., driver is in psychology
On identify oneself safe speed state, rather than the safe speed that road traffic environment allows.When environment changes, drive
Expected speed will be readjusted by sailing people, and adjust current actual vehicle speed according to new expection speed, so be recycled.
Step 2, the several drivers are obtained to drive a vehicle section in 50 quartile speeds of the tunnel portal section, the tunnel
50 quartile speeds of 50 quartile speeds, 50 quartile speeds of the tunnel outlet section and common fastlink.
In step 2, the several drivers drive a vehicle the 50 of section in 50 quartile speeds of the tunnel portal section, the tunnel
50 quartile speeds of quartile speed, 50 quartile speeds of the tunnel outlet section and common fastlink, specifically:
Several drivers are arranged in the real-time speed of certain a road section according to sequence from big to small or from small to large
Column take 50 quartile speeds of the intermediate real-time speed as several drivers in the section.
Specifically, the present invention is based on the acquisition data of train experiment, it is contemplated that speed is the driver's speed surveyed.
And the determination of objective security speed, when speed is close to or slightly greater than average speed, accident rate is minimum；Vehicle operation
A possibility that speed and the difference of average speed are bigger, and accident occurs is also bigger.
And from the point of view of traffic engineering, 85% fixed point bicycle free flow quartile speed is curb-top speed.Experiment
Middle taken super long tunnel section Maximum speed limit 60km/h, without minimum speed limit value；And common fastlink Maximum speed limit 80km/
H, minimum speed limit 60km/h.It is analyzed according to basic data, 85% quartile speed of all subjects has been more than maximum speed limit.In view of
Considerations above, the method divided using median, it is final choose 50% quartile speed as driver different sections of highway safety
Speed a reference value determines highest accident-free vehicle with ratio index in conjunction with the practical maximum speed limit of different sections of highway and minimum speed limit value
Speed and minimum safe speed, according to U-shaped curve, finally taking the mean value of the two is final objective security vehicle speed value.Therefore, this hair
The objective security speed of bright proposition determines that method not only within the scope of laws and regulations permitted safe speed, but also fully considers
The ga s safety degree of section environment.Essence is based on the assumption that
(1) super long tunnel ambient inlet section, driving section, outlet section and common highways in mountain areas section objective security vehicle speed value
It is different；
(2) bigger with the difference of objective security speed, behaviorist risk value is higher.
Step 3, the safe maximum permissable speed of the tunnel driving section, 50 quartile speeds of tunnel driving section are obtained, from
And the safe maximum permissable speed of the safe maximum permissable speed of the tunnel portal section, the tunnel outlet section is calculated.
Specifically, all drivers are both needed to experience dark adaptation and light adaptation process, speed in tunnel portal section and outlet section
Variation is obvious, and section speed of driving a vehicle in tunnel is more stable, and average speed value is higher, and therefore, driver adopts in tunnel driving section
Use maximum speed limit 60km/h as safe maximum permissable speed；Common fastlink then uses maximum speed limit 80km/h as highest
Safe speed.The equal use ratio index of the safe maximum permissable speed in other sections calculates.
The safe maximum permissable speed of the tunnel portal section, the highest safety of the tunnel outlet section are calculated according to the following formula
Speed:
Wherein, vphsIndicate the safe maximum permissable speed in the section p, vp50Indicate the 50 quartile speeds in the section p, p indicates that tunnel enters
Mouth section or tunnel outlet section；v1v1Indicate 50 quartile speeds of tunnel driving section.
Illustratively, the safe maximum permissable speed table being calculated is as shown in table 1, it is seen that tunnel environment entrance highest safety
Vehicle speed value is minimum, and common fastlink safe maximum permissable speed value is maximum.
1 safe maximum permissable speed table (km/h) of table
Step 4, the minimum safe speed for obtaining the common fastlink, according to the minimum peace of the common fastlink
The minimum safe speed, described of the tunnel portal section is calculated in full speed, 50 quartile speeds of the common fastlink
Minimum safe speed, the minimum safe speed of the tunnel outlet section of tunnel driving section.
Tunnel road does not have minimum speed limit, but the minimum speed limit 60km/h of common high speed.Therefore, using minimum speed limit value
60km/h is as minimum safe speed.The equal use ratio index of the minimum safe speed in other sections.
The minimum safe speed of tunnel portal section, the minimum safe vehicle of tunnel driving section are calculated according to the following formula
The minimum safe speed of fast, the described tunnel outlet section:
Wherein, vqlsIndicate the minimum safe speed in the section q, vq50Indicate the 50 quartile speeds in the section q, q indicates that tunnel enters
Mouth section, tunnel driving section or tunnel outlet section；v2Indicate 50 quartile speeds of common fastlink.
Illustratively, the minimum safe speedometer being calculated is as shown in table 2, it is seen that tunnel environment entrance minimum safe
Vehicle speed value is minimum, and common fastlink minimum safe vehicle speed value is maximum.
2 minimum safe speedometer (km/h) of table
| Section | 50% quartile speed | Minimum safe speed |
| Tunnel portal section | 66.59 | 42.27 |
| Tunnel driving section | 70.41 | 44.70 |
| Tunnel outlet section | 71.55 | 45.42 |
| Common fastlink | 94.51 | 60.00 |
Step 5, according to the safe maximum permissable speed of the tunnel portal section, the minimum safe speed of the tunnel portal section,
Obtain the objective security speed of the tunnel portal section；
According to the safe maximum permissable speed of tunnel driving section, the minimum safe speed of tunnel driving section, institute is obtained
State the objective security speed of tunnel driving section；
According to the minimum safe speed of the safe maximum permissable speed of the tunnel outlet section, the tunnel outlet section, institute is obtained
State the objective security speed of tunnel outlet section；
According to the minimum safe speed of the safe maximum permissable speed of the common fastlink, the common fastlink, obtain
To the objective security speed of the common fastlink.
Because the relationship of accident rate and speed is U-shaped, when actual speed is close to or slightly greater than average speed, accident rate is most
It is low.So taking objective security speed is the average value of each section corresponding safe maximum permissable speed and minimum safe speed.
Illustratively, according to the U-shaped change curve of speed, final determining objective security vehicle speed value is for safe maximum permissable speed and most
The mean value of lower security speed, calculated result are as shown in table 3.The safe speed value of tunnel portal section is minimum, common fastlink
Safe speed value is maximum.
The final safe speed value (km/h) of table 3
| Section | Safe speed value |
| Tunnel portal section | 49.51 |
| Tunnel driving section | 52.35 |
| Tunnel outlet section | 53.20 |
| Common fastlink | 70.00 |
Comprehensive environment is made of factors such as specific road conditions, traffic condition, safety devices.In conjunction with self-ability
(road-holding ability, lane-change ability, to emergency event stress processing capacity etc.), driver can according to comprehensive environment
The max speed of safety traffic is kept, referred to as " objective security speed ".This speed is road travel environment to safe driving
Feedback request, is also available to the safe and feasible vehicle of vehicle, and objective security speed can become with the continuous variation of environment
Change.
Step 6, tunnel portal section, tunnel driving section, tunnel outlet section, common fastlink are passed through according to each driver
When corresponding speed sampling point position at the expected speed of subjectivity, it is the tunnel portal section, tunnel driving section, tunnel outlet section, general
The objective security speed of logical fastlink obtains each driver in the tunnel portal section, tunnel driving section, tunnel exit
Accident-free vehicle speed difference when section, common fastlink at corresponding speed sampling point position, and using the accident-free vehicle speed difference as correspondence
Driver's corresponding speed sampling point position in the tunnel portal section, tunnel driving section, tunnel outlet section, common fastlink
The behaviorist risk quantizating index at place；And the accident-free vehicle speed difference is bigger, indicates driver's sample when to corresponding
The behaviorist risk for setting place section is higher.
By " the expected speed of subjectivity " and " objective security speed ", driver can be characterized to the subjectivity of current driving environment
The requirement of judgement and objective environment.Thus, it is believed that driver's behaviorist risk, derived from the two deviation, this species diversity is interchangeable with two
Speed index error quantifies.In practical driving conditions, there are three kinds of relationships with objective security speed for the expected speed of subjectivity:
(1) the two is almost the same: such case illustrates driver to the subjective judgement and effective supply situation of road environment
It is consistent, driver is travelled with the permitted safe speed of current environment, and driver's behaviorist risk value is low, and accident potential is small.
(2) expected speed is lower than safe speed: driver provides road environment error in judgement or current driving environment
Information is insufficient, and the degree of danger for judging driver is higher than actual conditions.In this case, although current behavior value-at-risk is low,
Driver's load is excessively high, it is possible to produce the case where behaviorist risk value of lower a moment dramatically increases.
(3) expected speed is higher than safe speed: driver's error in judgement, and the expection speed of subjective mind has been more than that environment is permitted
Perhaps it is worth.
The purpose of driver's behaviorist risk quantization is to screen key position point, accident potential section is found out, to there is needle
To property carry out safety devices improvement.And the key of behaviorist risk evaluation model is established, it is how to quantify subjective expected speed
With objective security speed.
Absolute difference using subjective expected speed and objective security speed refers to as the quantization of driver's behaviorist risk
Mark, abbreviation accident-free vehicle speed difference.Safe speed difference is bigger, illustrates that driver's behavior is more dangerous, behaviorist risk value is higher.?
To after the speed difference of all each driving sections of subject, because of unreferenced dimension, lateral comparison can not be carried out.So adopting
Transformation is standardized to speed difference data with extreme value facture, removes dimension, by all data conversions in section [0,1],
Driver's behaviorist risk value can be obtained in this way.Very poor standardization conversion process indicates are as follows:
Further, each driver is obtained in the step 6 to go out in the tunnel portal section, tunnel driving section, tunnel
After mouth section, the accident-free vehicle speed difference of common fastlink, the method also includes: very poor standard is carried out to the accident-free vehicle speed difference
Change conversion, specifically include:
Each driver is obtained in the tunnel portal section, tunnel driving section, tunnel outlet section, common in the step 6
After accident-free vehicle speed difference when fastlink at corresponding speed sampling point position, the method also includes: to the safe speed
Difference carries out very poor standardization conversion, specifically includes:
Remember that all drivers are corresponding in the tunnel portal section, tunnel driving section, tunnel outlet section, common fastlink
Accident-free vehicle speed difference matrix X at speed sampling point position are as follows:
Wherein, n indicates the number of driver, and m indicates that each driver goes out in tunnel portal section, tunnel driving section, tunnel
The number of corresponding speed sampled point, x when mouth section, common fastlinkijIndicate i-th of driver at j-th of speed sampling point
Accident-free vehicle speed difference；
All drivers all speed in the tunnel portal section, tunnel driving section, tunnel outlet section, common fastlink
The very poor R for spending the accident-free vehicle speed difference at sampling point position is indicated are as follows:
R=max xij-min xij
1≤i≤n 1≤i≤n
1≤j≤m 1≤j≤m
To all drivers in the tunnel portal section, tunnel driving section, the correspondence of tunnel outlet section, common fastlink
Accident-free vehicle speed difference matrix X at speed sampling point carries out very poor standardization using following formula and is converted to accident-free vehicle speed difference canonical matrix
Xk:
Wherein,
AndIt is distributed in section [0,1].
Those of ordinary skill in the art will appreciate that: realize that all or part of the steps of above method embodiment can pass through
The relevant hardware of program instruction is completed, and program above-mentioned can store in computer-readable storage medium, which exists
When execution, step including the steps of the foregoing method embodiments is executed；And storage medium above-mentioned includes: ROM, RAM, magnetic or disk
Etc. the various media that can store program code.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (4)
1. the behaviorist risk quantization method of driver under a kind of freeway tunnel environment, which is characterized in that the method includes
Following steps:
Step 1, it is assumed that there are several drivers to test, acquire every driver and pass through tunnel portal section, tunnel driving section, tunnel
The real-time speed of corresponding speed sampled point when road outlet section, common fastlink, and each speed sampling point is corresponding in real time
Speed is as the expected speed of subjectivity of the driver at corresponding speed sampling point position；
Step 2, the several drivers are obtained to drive a vehicle 50 points of section in 50 quartile speeds of the tunnel portal section, the tunnel
50 quartile speeds of position speed, 50 quartile speeds of the tunnel outlet section and common fastlink；
Step 3, the safe maximum permissable speed of the tunnel driving section, 50 quartile speeds of tunnel driving section are obtained, to count
Calculate the safe maximum permissable speed of the safe maximum permissable speed, the tunnel outlet section that obtain the tunnel portal section；
Wherein, the safe maximum permissable speed of the tunnel driving section is 60 kilometer per hours of maximum speed limit of tunnel driving section；
The safe maximum permissable speed of the tunnel portal section, the highest accident-free vehicle of the tunnel outlet section are calculated according to the following formula
Speed:
Wherein, vphsIndicate the safe maximum permissable speed in the section p, vp50Indicate the 50 quartile speeds in the section p, p indicates tunnel portal section
Or tunnel outlet section；v1Indicate 50 quartile speeds of tunnel driving section；
Step 4, the minimum safe speed for obtaining the common fastlink, according to the minimum safe vehicle of the common fastlink
The minimum safe speed of the tunnel portal section, the tunnel is calculated in 50 quartile speeds of fast, the described common fastlink
Minimum safe speed, the minimum safe speed of the tunnel outlet section for section of driving a vehicle；
The minimum safe speed of the common fastlink is 60 kilometer per hours of minimum speed limit value of common fastlink；
The minimum safe speed of tunnel entrance, the minimum safe speed of tunnel driving section, institute are calculated according to the following formula
State the minimum safe speed at tunnel exit:
Wherein, vqlsIndicate the minimum safe speed in the section q, vq50The 50 quartile speeds in the expression section q, q expression tunnel portal section,
Tunnel driving section or tunnel outlet section；v2Indicate 50 quartile speeds of common fastlink；
Step 5, it according to the safe maximum permissable speed of the tunnel portal section, the minimum safe speed of the tunnel portal section, obtains
The objective security speed of the tunnel portal section；
According to the safe maximum permissable speed of tunnel driving section, the minimum safe speed of tunnel driving section, the tunnel is obtained
The objective security speed of road driving section；
According to the minimum safe speed of the safe maximum permissable speed of the tunnel outlet section, the tunnel outlet section, the tunnel is obtained
The objective security speed of road outlet section；
According to the minimum safe speed of the safe maximum permissable speed of the common fastlink, the common fastlink, institute is obtained
State the objective security speed of common fastlink；
Wherein, objective security speed refers to the average value of each section corresponding safe maximum permissable speed and lower security speed；
Step 6, pass through when tunnel portal section, tunnel driving section, tunnel outlet section, common fastlink pairs according to each driver
Answer the expected speed of the subjectivity at speed sampling point position, the tunnel portal section, tunnel driving section, tunnel outlet section, common height
The objective security speed in fast section obtains each driver in the tunnel portal section, tunnel driving section, tunnel outlet section, general
Accident-free vehicle speed difference when logical fastlink at corresponding speed sampling point position, and using the accident-free vehicle speed difference as corresponding driver
Row in the tunnel portal section, tunnel driving section, tunnel outlet section, common fastlink at corresponding speed sampling point position
For risk quantification index；And the accident-free vehicle speed difference is bigger, indicates behavior wind of the driver at corresponding speed sampling point position
Danger is higher.
2. the behaviorist risk quantization method of driver under a kind of freeway tunnel environment according to claim 1, special
Sign is, obtains each driver in the tunnel portal section, tunnel driving section, tunnel outlet section, common height in the step 6
After accident-free vehicle speed difference when fast section at corresponding speed sampling point position, the method also includes: to the accident-free vehicle speed difference
Very poor standardization conversion is carried out, is specifically included:
Remember all drivers corresponding speed in the tunnel portal section, tunnel driving section, tunnel outlet section, common fastlink
Accident-free vehicle speed difference matrix X at sampling point position are as follows:
Wherein, n indicates the number of driver, m indicate each driver tunnel portal section, tunnel driving section, tunnel outlet section,
The number of corresponding speed sampled point, x when common fastlinkijIndicate safety of i-th of driver at j-th of speed sampling point
Speed is poor；
All drivers all speed in the tunnel portal section, tunnel driving section, tunnel outlet section, common fastlink are adopted
The very poor R of accident-free vehicle speed difference at sampling point position is indicated are as follows:
R=max xij-min xij
1≤i≤n 1≤i≤n
1≤j≤m 1≤j≤m
To all drivers the tunnel portal section, tunnel driving section, tunnel outlet section, common fastlink corresponding speed
Accident-free vehicle speed difference matrix X at sampled point carries out very poor standardization using following formula and is converted to accident-free vehicle speed difference canonical matrix Xk:
Wherein,
AndIt is distributed in section [0,1].
3. the behaviorist risk quantization method of driver under a kind of freeway tunnel environment according to claim 1, special
Sign is, in step 1,
The tunnel portal section is formed by entering before tunnel face 300 meters and entering 300 meters behind tunnel face of section, the tunnel outlet section
By go out before tunnel face 300 meters and out behind tunnel face 300 meters of section forms, the tunnel driving section refers into after tunnel face
300 meters and the section before tunnel face between 300 meters out.
4. the behaviorist risk quantization method of driver under a kind of freeway tunnel environment according to claim 1, special
Sign is, in step 2, the several drivers drive a vehicle the 50 of section in 50 quartile speeds of the tunnel portal section, the tunnel
50 quartile speeds of quartile speed, 50 quartile speeds of the tunnel outlet section and common fastlink, specifically:
Several drivers are arranged in the real-time speed of certain a road section according to sequence from big to small or from small to large, are taken
50 quartile speeds of the intermediate real-time speed as several drivers in the section.
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| CN110060474B (en) * | 2019-04-12 | 2021-09-24 | 武汉理工大学 | Tunnel dynamic edge rate intelligent speed control system and method |
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