CN102938204A - Variable guiding lane steering function conversion control method of city intersections - Google Patents
Variable guiding lane steering function conversion control method of city intersections Download PDFInfo
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Abstract
The invention discloses a variable guiding lane steering function conversion control method of city intersections. The control method directs to time selection and clearing time of variable guiding lane steering function conversion, mainly gives consideration to time and modes of a variable guiding lane steering function, aims at reducing delay of vehicles at intersections, and simultaneously improves use ratio of a variable guiding lane and smooth transition of a vehicle changing lane. The control method directing to time selection and clearing time of the variable guiding lane steering function conversion is built, and the control method particularly comprises detecting traffic flow occupancy; judging that the variable guiding lane steering function has conversion; selecting time for the variable guiding lane steering function has conversion; calculating the clearing time of the variable guiding lane; and achieving reasonable operation of vehicles.
Description
Technical field
The invention belongs to the road traffic control field, be specifically related to a kind of variable guided vehicle road turning function of urban intersection conversion control method of constantly selecting and empty the time towards the conversion of variable guided vehicle road turning function
Background technology
Conventional cross mouth track direction ratio is more fixing, can not adapt to volume of traffic unevenness in time; When non-uniform phenomenon occurs, often cause the crossing overcrowding, to line up long, it is larger that vehicle is incured loss through delay, and also aggravated the frequency of environmental pollution, illegal activities simultaneously.Present stage, the conversion of variable guided vehicle road turning function often needs by traffic police's Real Time Observation Intersection Traffic Volume and regulates and control, this subjective judgement often causes conversion constantly incorrect, and traffic congestion or unlawful practice also exist utilization factor to hang down inferior problem simultaneously.
The existing methods such as induction control, the control of two stop line, master, pre-signal control of having researched and proposed, but these researchs clearly do not propose the conversion system of selection constantly of variable guided vehicle road turning function, do not propose how to carry out effectively emptying of variable guided vehicle road under induction control yet.
The present invention vacates from the cleaning vehicle of the variable guided vehicle road in crossing canalization district and sends out, propose that the conversion of variable guided vehicle road turning function is selected constantly and variable guided vehicle road empties the computing method of time, improve the utilization factor of variable guided vehicle road, reduce vehicle in the delay of crossing.
Summary of the invention
Technical matters: the objective of the invention is to propose the variable guided vehicle road turning function of a kind of urban intersection conversion control method, reduce the unnecessary conflict that vehicle produces because the track direction changes; The simultaneously calculating that empties the time in this paper, the closing to reality magnitude of traffic flow reduces unnecessary wait more, reduces vehicle in the delay of crossing.
Technical scheme: the variable guided vehicle road turning function of urban intersection of the present invention conversion control method, utilize inductive coil Real-Time Monitoring Intersection Traffic Volume occupation rate, the moment and the calculating of the conversion of choose reasonable turning function empty the time, reduce the vehicle intersection delay, and its concrete steps are:
1.) the detection of magnitude of traffic flow occupation rate,
2.) the differentiation of variable guided vehicle road turning function generation conversion,
3.) moment of variable guided vehicle road turning function conversion is selected,
4.) variable guided vehicle road empties the calculating of time,
5.) the rationally realization of operation of vehicle.
The method of discrimination of monitoring magnitude of traffic flow occupation rate and variable guided vehicle road turning function generation conversion is:
21.) enter the left turn lane place in crossing canalization district and each track, highway section arranges inductive coil, by obtaining the occupation rate of vehicle on the inductive coil, judge whether vehicle queue overflows,
22.) when locating coil, the canalization district shows high occupation rate, and when No. 1 track inductive coil occupation rate surpassed 2, No. 3 tracks on the highway section simultaneously, left-turning traffic overflowed, and keeps straight on less, and variable guided vehicle road should be set to; Hang down occupation rate when canalization district coil shows, 2, No. 3 track inductive coil occupation rates surpass No. 1 track on the highway section simultaneously, and straight-going traffic is overflowed, and turn left less, and variable guided vehicle road should be set to keep straight on.
The moment system of selection of variable guided vehicle road turning function conversion is:
The considering intersection clearance is sequentially turned left afterwards for keeping straight on first, when variable guided vehicle road turning function turns from straight to left, and conversion constantly select to let pass zero hour of craspedodrome phase place; When variable guided vehicle road turning function turns from left to straight, conversion constantly select to let pass zero hour of left turn phase.
The time that the empties method of calculating the variable guided vehicle road in crossing is:
Stop line place in variable guided vehicle road arranges inductive coil, when variable guided vehicle road has vehicle when green light passes through constantly, coil-induced to vehicle by the time, then controlling long green light time increases a unit interval, green time should satisfy the restriction of minimum and maximum green time simultaneously.
Minimum green time:
Ls: start lost time (s);
Z: stop line is to the distance (m) of conflict point;
V: vehicle can be got 15% speed of a motor vehicle (m/s) in the travel speed of entrance driveway;
I: green light interval time (s);
Unit green extension:
L: the length of vehicle, desirable 6m/s;
T0: average headway (s)
Maximum long green light time should be greater than the long green light time of fixed calculating.
The vehicle rationally implementation method of operation is:
51.) when variable guided vehicle road turning function is transformed to by craspedodrome, select the zero hour of craspedodrome phase place, changing Lane sign direction board, at this moment, through vehicles on the variable guided vehicle road between stop line and lane markings direction board continues to travel, through vehicles changing Lane after the lane markings direction board enters the adjacent straight runway, and left turn lane can enter variable guided vehicle road simultaneously.
52.) when variable guided vehicle road turning function is changed to craspedodrome by left turn, select the zero hour of left turn phase, changing Lane sign direction board, at this moment, left turning vehicle on the variable guided vehicle road between stop line and lane markings direction board continues to travel, left turning vehicle changing Lane after the lane markings direction board enters adjacent left turn lane, and Through Lane can enter variable guided vehicle road simultaneously.
Beneficial effect: the variable guided vehicle road turning function conversion system of selection constantly that the present invention proposes, utilize the signal conversion in the signal period constantly to carry out choose reasonable, reduced the unnecessary conflict that vehicle produces because the track direction changes; The simultaneously calculating that empties the time in this paper, the closing to reality magnitude of traffic flow has reduced unnecessary wait more, has reduced the delay of vehicle in the crossing.
Description of drawings
Fig. 1 is the position of track distribution, numbering situation and the inductive coil of crossing.
Fig. 2 is the differentiation process flow diagram of crossing variable guided vehicle road turning function variation tendency.
Fig. 3 be variable guided vehicle road turning function conversion constantly with the correlationship of signal period figure, left oblique line is that green time, right oblique line are that yellow time, white are red time, 1 moment that turns from straight to left for variable guided vehicle road turning function of the moment, constantly 2 moment that turn from left to straight for variable guided vehicle road turning function among the figure.
Fig. 4 is 15 minutes statistics traffic informations of example crossing.
Embodiment
Step 1: in the highway section and the canalization district enter left turn lane place, the leftmost side inductive coil be set;
Step 2: the occupation rate of monitoring coil, when the coil-induced coil in canalization district was in high occupation rate, the coil occupation rate in No. 1 track was higher than the track 2, No. 3 on the highway section simultaneously, and then left-turning traffic overflows, and variable guided vehicle road should be set to; When canalization district coil was in low occupation rate, 2, No. 3 lane line circle occupation rates were higher than the track No. 1 on the highway section simultaneously, and then straight-going traffic is overflowed, and variable guided vehicle road should be set to keep straight on;
Step 3: judge to turn left to overflow when step 2, when variable guided vehicle road turning function need to become left-hand rotation from craspedodrome, select the zero hour of craspedodrome phase place, changing Lane sign direction board, variable guided vehicle road stop line place inductive coil starts simultaneously, control craspedodrome long green light time; Judge craspedodrome when step 2 and overflow, when variable guided vehicle road turning function need to become craspedodrome from left-hand rotation, select the zero hour of left turn phase, changing Lane sign direction board, variable guided vehicle road stop line place inductive coil starts simultaneously, controls the left-hand rotation long green light time.
Empty Time Calculation: when changeable driveway have vehicle green light constantly by the time, coil-induced to vehicle by the time, then controlling long green light time increases a unit interval, green time should satisfy the restriction of minimum and maximum green time simultaneously.
Minimum green time:
Ls: start lost time (s);
Z: stop line is to the distance (m) of conflict point;
V: vehicle can be got 15% speed of a motor vehicle (m/s) in the travel speed of entrance driveway;
I: green light interval time (s);
Unit green extension:
L: the length of vehicle, desirable 6m/s;
T0: average headway (s)
Maximum long green light time should be greater than the long green light time of fixed calculating.
Step 4: the lane markings direction board of the vehicle in highway section after according to conversion moves.The implementation example further specifies the present invention by reference to the accompanying drawings:
Step 1: the spatial information of known crossing and inductive coil setting as shown in Figure 1, signal timing dial as shown in Figure 3, the statistics volume of traffic as shown in Figure 4
Step 2: inductive coil monitors along with the time changes, and left-turn volume constantly reduces, and the straight-going traffic amount constantly increases, and this moment, changeable driveway was left-hand rotation need to change craspedodrome into.
Step 3: according to step 2, select left turn phase zero hour, changing Lane sign direction board turns from left to straight, and calculates the time that empties simultaneously:
Startup Ls lost time got 3 seconds, and z is 39 meters, and v is 8 meter per seconds, and I is 4 seconds, and t0 is 2 seconds.
Minimum green time is 3+39/8-4=3.875 second=4 second;
Unit green extension is 6/8+2=2.75 second=3 second.
Maximum long green light time is the long green light time of former fixedly timing, namely 28 seconds.
Step 4: after conversion finishes, recomputate signal timing dial, turned left 35 seconds, kept straight on 46 seconds, signal lamp and the lane markings direction board of vehicle after according to conversion moves.
Claims (5)
1. the variable guided vehicle road turning function of urban intersection conversion control method, it is characterized by, utilize inductive coil Real-Time Monitoring Intersection Traffic Volume occupation rate, the moment and the calculating of the conversion of choose reasonable turning function empty the time, reduce the vehicle intersection delay, its concrete steps are:
1.) the detection of magnitude of traffic flow occupation rate,
2.) the differentiation of variable guided vehicle road turning function generation conversion,
3.) moment of variable guided vehicle road turning function conversion is selected,
4.) variable guided vehicle road empties the calculating of time,
5.) the rationally realization of operation of vehicle.
2. the variable guided vehicle road turning function of urban intersection according to claim 1 conversion control method is characterized in that, the method for discrimination of monitoring magnitude of traffic flow occupation rate and variable guided vehicle road turning function generation conversion is:
21.) enter the left turn lane place in crossing canalization district and each track, highway section arranges inductive coil, by obtaining the occupation rate of vehicle on the inductive coil, judge whether vehicle queue overflows,
22.) when locating coil, the canalization district shows high occupation rate, and when No. 1 track inductive coil occupation rate surpassed 2, No. 3 tracks on the highway section simultaneously, left-turning traffic overflowed, and keeps straight on less, and variable guided vehicle road should be set to; Hang down occupation rate when canalization district coil shows, 2, No. 3 track inductive coil occupation rates surpass No. 1 track on the highway section simultaneously, and straight-going traffic is overflowed, and turn left less, and variable guided vehicle road should be set to keep straight on.
3. the variable guided vehicle road turning function of urban intersection according to claim 1 conversion control method is characterized in that, the moment system of selection of variable guided vehicle road turning function conversion is:
The considering intersection clearance is sequentially turned left afterwards for keeping straight on first, when variable guided vehicle road turning function turns from straight to left, and conversion constantly select to let pass zero hour of craspedodrome phase place; When variable guided vehicle road turning function turns from left to straight, conversion constantly select to let pass zero hour of left turn phase.
4. the variable guided vehicle road turning function of urban intersection according to claim 1 conversion control method is characterized in that, the time that the empties method of calculating the variable guided vehicle road in crossing is:
Stop line place in variable guided vehicle road arranges inductive coil, when variable guided vehicle road have vehicle green light constantly by the time, coil-induced to vehicle by the time, then controlling long green light time increases a unit interval, green time should satisfy the restriction of minimum and maximum green time simultaneously
Minimum green time:
Ls: start lost time (s);
Z: stop line is to the distance (m) of conflict point;
V: vehicle can be got 15% speed of a motor vehicle (m/s) in the travel speed of entrance driveway;
I: green light interval time (s);
Unit green extension:
L: the length of vehicle, desirable 6m/s;
T0: average headway (s)
Maximum long green light time should be greater than the long green light time of fixed calculating.
5. the variable guided vehicle road turning function of urban intersection according to claim 1 conversion control method is characterized in that, the vehicle rationally implementation method of operation is:
51.) when variable guided vehicle road turning function is transformed to by craspedodrome, select the zero hour of craspedodrome phase place, changing Lane sign direction board, at this moment, through vehicles on the variable guided vehicle road between stop line and lane markings direction board continues to travel, through vehicles changing Lane after the lane markings direction board enters the adjacent straight runway, and left turn lane can enter variable guided vehicle road simultaneously;
52.) when variable guided vehicle road turning function is changed to craspedodrome by left turn, select the zero hour of left turn phase, changing Lane sign direction board, at this moment, left turning vehicle on the variable guided vehicle road between stop line and lane markings direction board continues to travel, left turning vehicle changing Lane after the lane markings direction board enters adjacent left turn lane, and Through Lane can enter variable guided vehicle road simultaneously.
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| CN103174313A (en) * | 2013-04-18 | 2013-06-26 | 东南大学 | Traffic organization method of stereo garage |
| CN103186984A (en) * | 2013-04-22 | 2013-07-03 | 东南大学 | Method for triggering transformation of steering function of variable guidance lanes at urban intersections |
| CN103258436A (en) * | 2013-05-21 | 2013-08-21 | 东南大学 | Method for determining length of variable guide lane for signal control intersection approach |
| CN103426319A (en) * | 2013-07-19 | 2013-12-04 | 安锐 | Traffic control method and system based on sense coil and variable lane |
| CN103426316A (en) * | 2013-07-19 | 2013-12-04 | 安锐 | Traffic control method and system based on variable lane |
| CN103426318A (en) * | 2013-07-19 | 2013-12-04 | 安锐 | Traffic control method and system based on video tracking and variable lane |
| CN103700267A (en) * | 2013-12-31 | 2014-04-02 | 西南交通大学 | Self-adaption emptying signal control method for signal intersection |
| CN103700273A (en) * | 2014-01-06 | 2014-04-02 | 东南大学 | Signal timing optimization method based on variable guide lane |
| CN104036645A (en) * | 2014-06-03 | 2014-09-10 | 东南大学 | Reversible-lane-based intersection signal control method |
| CN107067764A (en) * | 2017-03-21 | 2017-08-18 | 东南大学 | A kind of variable guided vehicle road self-adaptation control method of urban intersection |
| CN107622675A (en) * | 2017-10-24 | 2018-01-23 | 河南城建学院 | The variable inlet and outlet lane traffic method of flow control of signalized intersections |
| CN107886745A (en) * | 2017-11-09 | 2018-04-06 | 中冶南方城市建设工程技术有限公司 | A kind of dynamically changeable track projection lamp and its control method |
| CN108831166A (en) * | 2018-07-31 | 2018-11-16 | 北京航空航天大学 | Intersection can be changed guided vehicle road function change method under bus or train route cooperative surroundings |
| CN108986491A (en) * | 2018-07-26 | 2018-12-11 | 武汉邮电科学研究院有限公司 | The traveling guidance system and method for traffic congestion is avoided based on artificial intelligence |
| CN109003444A (en) * | 2018-07-02 | 2018-12-14 | 北方工业大学 | Urban intersection overflow control method based on wide area radar microwave detector |
| CN109035822A (en) * | 2018-07-09 | 2018-12-18 | 北方工业大学 | Variable lane emptying control method based on double-layer signal planning |
| CN109859501A (en) * | 2019-03-08 | 2019-06-07 | 鲁东大学 | A kind of variable guided vehicle road driving direction conversion intelligent control method of signalized intersections |
| CN110097752A (en) * | 2019-03-27 | 2019-08-06 | 杭州远眺科技有限公司 | A kind of intelligent and variable guided vehicle road calculation method |
| CN111127872A (en) * | 2019-12-10 | 2020-05-08 | 东南大学 | Control method of straight-right variable guide lane considering pedestrian and right-turn vehicle collision |
| CN111260938A (en) * | 2019-12-30 | 2020-06-09 | 浙江浙大中控信息技术有限公司 | Variable lane self-adaptive control method based on traffic demand |
| CN111369816A (en) * | 2019-11-29 | 2020-07-03 | 杭州海康威视系统技术有限公司 | Variable guide lane passing direction control method and device, electronic equipment and system |
| CN112991784A (en) * | 2021-02-07 | 2021-06-18 | 青岛海信网络科技股份有限公司 | Self-adaptive variable lane control method and device in signal period |
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| CN103174313B (en) * | 2013-04-18 | 2015-06-03 | 东南大学 | Traffic organization method of stereo garage |
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| CN103186984B (en) * | 2013-04-22 | 2015-01-07 | 东南大学 | Method for triggering transformation of steering function of variable guidance lanes at urban intersections |
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Application publication date: 20130220 |