CN104851290B - A kind of determination method forbidding changing Lane length based on test vehicle information - Google Patents
A kind of determination method forbidding changing Lane length based on test vehicle information Download PDFInfo
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- CN104851290B CN104851290B CN201510213396.2A CN201510213396A CN104851290B CN 104851290 B CN104851290 B CN 104851290B CN 201510213396 A CN201510213396 A CN 201510213396A CN 104851290 B CN104851290 B CN 104851290B
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- 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
- G08G1/0108—Measuring and analyzing of parameters relative to traffic conditions based on the source of data
- G08G1/0112—Measuring and analyzing of parameters relative to traffic conditions based on the source of data from the vehicle, e.g. floating car data [FCD]
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- 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
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Abstract
The invention discloses a kind of determination method forbidding changing Lane length based on test vehicle information, first pass through artificial counting method or Photographic technique collection traffic data, the total wheel traffic in the every track obtaining is converted into stoichiometric standard car transportation amount, then according to the information in each bar track calculates the average queue length after the stop line of crossing Mei Tiaojin road junction, finally maximum queue length in each track is converted into the average queue length of vehicle in units of rice, minimum safe distance between along with the track queuing vehicle of maximum vehicle number forbids changing Lane line length required by can get.This method can prevent from forbidding that length for change lanes is too short due to lead to queue length equalization, range is more extensive, result of calculation is more accurate, decrease the long vehicle causing of queue length and be forced into wrong track, can be maximum on the basis of ensureing safety economize on resources, reduces cost.
Description
Technical field
The present invention relates in traffic engineering road traffic marking apply draw field in based on test vehicle information forbid become
Change the determination method of lane length.
Background technology
Traffic sign and marked apply draw during, forbid changing Lane line be graticule apply draw in important ingredient, prohibit
Only the effect of changing Lane line is prohibited from vehicle changing Lane traveling or piggybacking is overtaken other vehicles, and has a plurality of in the same direction located at complex traffic
The bridge of runway, tunnel, bend, ramp, carriageway width gradual change section, crossing inlet road, close to zebra crossing
Section or other think the section of changing Lane to be forbidden.Forbid that the width of changing Lane line is consistent with demarcation line, and be white
Solid line, near intersection parking line, in order to separate the motor vehicles travelling in the same direction.
At present, the existing determination method forbidding changing Lane length, does not account for intersection signal phase place, according only to friendship
The average queue length of prong forbids changing Lane length to estimate, actual queue length has necessarily with bar track each in actual life
Difference, forbid changing Lane length determine inaccurate will bring serious consequence, the same line efficiency of impact crossing, also can
Bring danger, if forbidding that changing Lane line is long, vehicle can be made to be strayed into track and cannot changing Lane, bring not to vehicle
Just, if forbidding that changing Lane line is too short, the random changing Lane of vehicle can be made, causing crossing to block, reducing traffic efficiency, sternly
Vehicle accident can be led to during weight.
Content of the invention
Technical problem：The present invention provides one kind that traffic lane length of crossing inlet road for forbidding lane exchange can be made to meet actual car
Extensively, result accurately, economizes on resources to greatest extent for traffic demand, range, reduces cost based on test vehicle information
The determination method forbidding changing Lane length.
Technical scheme：A kind of determination method forbidding changing Lane length based on test vehicle information of the present invention, bag
Include following steps：
(1) gather traffic data, and each bar track total wheel traffic is converted into each bar track stoichiometric standard as follows
Car transportation amount, thus obtains the vehicle average arrival rate in each bar track：
λj=Vej=Vj∑PijEij
Wherein, i represents type of vehicle, i.e. large car or car；J represents lane number；VejFor j-th strip track equivalent mark
Quasi- car transportation amount；λjVehicle for j-th strip track averagely reaches rate, λj=Vej,/hour；VjIt is the jth without conversion
Bar track total wheel traffic；PijThe i-th class car volume of traffic in j-th strip track accounts for the percentage ratio of total wheel traffic；EijJ-th strip track
The i-th class car vehicle conversion factor；
(2) investigation obtains each bar track red light duration R at the intersectionj；
(3) the average queue length E in each bar track is calculated according to following formulaj(N)：
Wherein, p is the shared ratio in queuing vehicle of instruction carriage, and E (S) is instruction carriage ratio is each bar track car during p
Average queue length；
(4) calculated according to following formula and forbid changing Lane line length：
L=max (Ej(N))×lb+(|max(Ej(N))|-1)×la
Wherein：max(Ej(N)) it is maximum average queue length in all tracks；|max(Ej(N)) | represent max (Ej
(N) rounding)；lbFor standard car length, take 4～5 meters；laFor the minimum safe distance between the queuing vehicle tailstock and headstock,
Take 1～2 meter.
Further, in described step (1), the traffic data of collection is：The medium-and-large-sized car volume of traffic in each bar track and car
The volume of traffic.
Further, each bar track that in described step (2), investigation obtains red light duration at the intersection, is handed over by target
The signal timing dial of prong determines.
Beneficial effect：The present invention compared with prior art, has advantages below：
Existing determination forbid that the method for changing Lane length is the average queue length according to all tracks in crossing
Determine, the method can be long due to certain track (such as left turn lane) queue length, will lead to calculated after equalization
Forbid that changing Lane length can not meet needs, and, right-turn lane is taken into account by existing method, and right-turn lane is queued up
Substantially without queuing vehicle, this also will make value of calculation less than normal.The present invention passes through to calculate the average queue length in each bar track,
Obtain maximum and forbid changing Lane line length for determining, can prevent from forbidding change due to lead to queue length equalization
Change the too short intersection traffic causing of lane length crowded.The calculated crossing inlet of method introduced by the present invention
Road forbids that the length of changing Lane line more conforms to the demand of actual vehicle flowrate, because the method considers all tracks in calculating
Middle queue length, and take queue length the longest as the foundation forbidding changing Lane length, improve traffic efficiency.
Range is more extensive, and result of calculation is more accurate.Because it is contemplated that the information in every track, and by each bar
The duration that track is located at out of phase considers wherein, to make result more accurate.
The present invention reduces the long vehicle causing of queue length is forced into wrong track.If forbidding changing Lane line
Too short, vehicle points out when travelling to travel on changeable driveway always so that vehicle has wanted to proceed to during expectation track it is desirable to track
It is booked vehicle, although now vehicle cannot proceed in expectation track because track is booked on changeable driveway.
The present invention can economize on resources on the basis of ensureing safety to greatest extent, reduces cost.By institute of the present invention
The method calculated crossing inlet road introduced forbids that the length of changing Lane line meets the demand of actual vehicle flowrate, will not
The paint waste leading to because this line is long occurring, thus having saved resource, reducing cost.
Brief description
Fig. 1 is that in the present invention, changing Lane line schematic diagram is forbidden in crossing inlet road.
Fig. 2 is traffic data collection point schematic diagram in the present invention.
Fig. 3 is signal timing dial figure in the embodiment of the present invention.
Specific embodiment
With reference to embodiment and Figure of description, the present invention is further illustrated.
The determination method forbidding changing Lane length based on test vehicle information of the present invention, its specific implementation step is such as
Under：
1 traffic data information collection
For the first enumeration district at 100 meters of stop line first on selected target crossing inlet road, in the peak hour, with 5
Minute passes through the large car in this region Ge Tiao track and the peak hour traffic V of car for a time interval investigation1jWith
V2j, and investigate the vehicle number Q in the case of dolly followed by this region Ge Tiao track dolly in continuous time section1j；Then, select
It is the second enumeration district at the stop line in target crossing inlet road, record target intersection signal timing.
2 volume of traffic conversions
First, calculate the average headway that dolly followed by dolly in enumeration district each bar lane traffic stream
Secondly, calculate during all vehicle headstocks in enumeration district each bar lane traffic stream away from meansigma methodss3rd, calculate
The vehicle conversion factor of enumeration district each track large car4th, by each for enumeration district track large car volume of traffic
It is scaled stoichiometric standard car transportation amount, thus obtain vehicle average arrival rate λ in each bar trackj=Vej=Vj∑PijEij=
(V1+V2)[qj×Ej+(1-qj)×1]
Wherein：Q1jEach bar track car follows the continuous hourly traffic volume of car ,/hour；qbjEach bar car
Flow rate in the case of road 100% standard car ,/second, in available traffic flow, the average headstock of car followed by car
When away from HppjTry to achieve, qbj=1/Hppj；qmjEach bar track hybrid vehicle flow rate ,/second, all time headways in available traffic flow
Meansigma methodss HmjTry to achieve, qmj=1/Hmj；qjEach bar lane traffic forms the percentage ratio of medium-and-large-sized car,Vj—
Each bar track is without enumeration district each track total wheel traffic of conversion, Vj=V1j+V2j.
3 near target crossing, shows, by traffic lights, the signal timing dial determining target crossing, and then can draw
This target intersection signal timing figure, thus can get each bar track red light duration Rj.Data be according to crossing record true
Real data, due to because the signal timing dial of crossing is fixing (will not be according to time change), recording crossing red light
Time can be in any time during investigating.The investigation of this data and step 1) there is no temporal relation, crossing
Signal timing dial is constant it is possible to be any time.
4 calculating enumeration district each track queue lengths
The average queue length in j-th strip track Ej(N) it is：
5 calculating traffic lane length of crossing inlet road for forbidding lane exchanges
L=max (Ej(N))×lb+(|max(Ej(N))|-1)×la=max (λjRj)×lb+(max(λjRj)-1)×la
Wherein：max(Ej(N)) maximum average queue length in all tracks；
|max(Ej(N))|—max(Ej(N) rounding)；lbStandard car length, takes 4～5 meters；laQueuing car
?
Minimum safe distance between the tailstock and headstock, takes 1～2 meter.
Embodiment：
Taking Suzhou City Xing Hu street with Zhong Yuanlu crossing as a example.This crossing north entrance driveway has four tracks, and respectively one
Bar right-turn lane, two Through Lanes, a left turn lane, this crossing north entrance driveway forbids the determination step of changing Lane length
Suddenly it is：
1 goes out as the first enumeration district in 100 meters from stop line of northing mouth track pitch, in next peak period afternoon (5：00～6:
00), investigate this region by the large car of each points for investigation and compact car volume of traffic V with 5 minutes for interval1And V2, and continuous
Volume of traffic Q in the case of dolly followed by dolly in 5 minutes1, obtained initial data such as form 1, reduced data such as form 2
Shown：
15 minutes northing mouth peak hours of table volume of traffic
Table 2 traffic counts result
As seen from the above table：
The ratio of left-hand rotation large car is：
Record dolly in continuous 5 minutes in the first enumeration district left turn lane and be 19 with the dolly volume of traffic, change hour into and hand over
Flux, obtains：
The ratio of 1 large car of keeping straight on is：
Record dolly in continuous 5 minutes in the first enumeration district straight trip 1 track and be 49 with the dolly volume of traffic, change hour into and hand over
Flux, obtains：
The ratio of 2 large cars of keeping straight on is：
Record dolly in continuous 5 minutes in the first enumeration district straight trip 2 tracks and be 47 with the dolly volume of traffic, change hour into and hand over
Flux, obtains：
The ratio of right-hand rotation large car is：
Record dolly in continuous 5 minutes in the first enumeration district right-turn lane and be 4 with the dolly volume of traffic, change a hour traffic into
Amount, obtains：
2 with stop line for the second enumeration district, and the signal timing dial figure that investigation obtains crossing is as shown in Figure 3：
As shown in Figure 3：North and south left-hand rotation red light duration R1：92s；Keep straight on red light duration R in north and south2：82s；During the right-hand rotation red light of north and south
Long R3：0s.
3 volume of traffic conversions
Follow the average headway formula of dolly by dolly in each lane traffic stream of this crossing：And
Flow rate formula in the case of 100% standard car：?：Substitute into data to obtain：
Turn left：
Straight trip 1：
Straight trip 2：
Turn right：
By in enumeration district each bar lane traffic stream during all vehicle headstocks away from Mean Value Formulas：And
Hybrid vehicle flow rate formula in traffic flow：Obtain：Substitute into data to obtain：
Turn left：
Straight trip 1：
Straight trip 2：
Turn right：
The vehicle conversion factor of each track in this crossing large car is：
Turn left：
Straight trip 1：
Straight trip 2：
Turn right：
The each track in this crossing stoichiometric standard car transportation amount is：
Turn left：
λ1=Ve1=V ∑ PiEi=(V1+V2)[q1×E1+(1-q1) × 1=(11+155) × [0.066 × 7+ (1-
0.066) × 1]=231.74l/hour=0.064/second；
Straight trip 1：
λ2=Ve2=V ∑ PiEi=(V1+V2)[q2×E2+(1-q2) × 1=(26+476) × [0.052 × 4+ (1-
0.052) × 1]=580.312/hour=0.161/second；
Straight trip 2：
λ3=Ve3=V ∑ PiEi=(V1+V2)[q3×E3+(1-q3) × 1=(35+489) × [0.067 × 2+ (1-
0.067) × 1]=559.108/hour=0.155/second；
Turn right：
λ4=Ve4=V ∑ PiEi=(V1+V2)[q4×E4+(1-q4) × 1=(3+40) × [0.07 × 2+ (1-0.07) ×
1]=46.01/hour=0.013/second；
The 4 calculating average queue lengths in each track：
E1(N)=λ1×R1=0.064 × 92=5.9
E2(N)=λ2×R2=0.161 × 82=13.2
E3(N)=λ3×R3=0.155 × 82=12.71
E4(N)=λ4×R4=0.013 × 0=0
Lane change line length is forbidden in 5 calculating crossings：
L=max (Ej(N))×lb+(|max(Ej(N))|-1)×la=13.2 × 4.5+ (13-1) × 1.5=77.4m
Wherein lbTake 4.5m；laTake 1.5m.
Therefore this crossing forbids that lane change line length is 77m.
Above-described embodiment be only the preferred embodiment of the present invention it should be pointed out that：Ordinary skill for the art
For personnel, under the premise without departing from the principles of the invention, some improvement and equivalent can also be made, these are to the present invention
Claim improves and the technical scheme after equivalent, each falls within protection scope of the present invention.
Claims (3)
1. a kind of forbid the determination method of changing Lane length it is characterised in that the method includes based on test vehicle information
Following steps：
(1) gather traffic data, and each bar track total wheel traffic is converted into the little vapour of each bar track stoichiometric standard as follows
The car volume of traffic, thus obtains the vehicle average arrival rate in each bar track：
λj=Vej=Vj∑PijEij
Wherein, i represents type of vehicle, i.e. large car or car；J represents lane number；VejLittle for j-th strip track stoichiometric standard
Mechanical transport amount；λjVehicle for j-th strip track averagely reaches rate, λj=Vej,/hour；VjIt is the j-th strip car without conversion
Road total wheel traffic；PijThe i-th class car volume of traffic in-j-th strip track accounts for the percentage ratio of total wheel traffic；EijI-th class in-j-th strip track
The vehicle conversion factor of car；
(2) investigation obtains each bar track red light duration R at the intersectionj；
(3) the average queue length E in each bar track is calculated according to following formulaj(N)：
Wherein, p is the shared ratio in queuing vehicle of instruction carriage, and E (S) is instruction carriage ratio is each bar track vehicle during p
Average queue length；
(4) calculated according to following formula and forbid changing Lane line length：
L=max (Ej(N))×lb+(|max(Ej(N))|-1)×la
Wherein：max(Ej(N)) it is maximum average queue length in all tracks；|max(Ej(N)) | represent max (Ej(N))
Round；lbFor standard car length, take 4～5 meters；laFor the minimum safe distance between the queuing vehicle tailstock and headstock, take 1～2
Rice.
2. a kind of determination method forbidding changing Lane length based on test vehicle information according to claim 1, its
It is characterised by, in described step (1), the traffic data of collection is：The medium-and-large-sized car volume of traffic in each bar track and car transportation amount.
3. a kind of determination method forbidding changing Lane length based on test vehicle information according to claim 1, its
It is characterised by, each bar track that in described step (2), investigation obtains red light duration at the intersection, by the letter of target crossing
Number timing determines.
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| CN201510213396.2A CN104851290B (en) | 2015-04-29 | 2015-04-29 | A kind of determination method forbidding changing Lane length based on test vehicle information |
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| CN201510213396.2A CN104851290B (en) | 2015-04-29 | 2015-04-29 | A kind of determination method forbidding changing Lane length based on test vehicle information |
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| CN104851290B true CN104851290B (en) | 2017-03-08 |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007179430A (en) * | 2005-12-28 | 2007-07-12 | Matsushita Electric Ind Co Ltd | Traffic flow control system |
| CN101329817A (en) * | 2007-06-18 | 2008-12-24 | 陈宏基 | Intelligent signal control method for capturing and sharing traffic information |
| CN101510355B (en) * | 2009-03-30 | 2010-06-30 | 东南大学 | Method for determining traffic lane length of crossing inlet road for forbidding lane exchange |
| CN102071609B (en) * | 2011-01-11 | 2012-10-03 | 上海市城市建设设计研究院 | Crossing pre-signal lane |
| CN103258436B (en) * | 2013-05-21 | 2015-04-08 | 东南大学 | Method for determining length of variable guide lane for signal control intersection approach |
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Granted publication date: 20170308 Termination date: 20200429 |