CN103136941A - Coordination control method of dissymmetric artery - Google Patents
Coordination control method of dissymmetric artery Download PDFInfo
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- CN103136941A CN103136941A CN2013100252582A CN201310025258A CN103136941A CN 103136941 A CN103136941 A CN 103136941A CN 2013100252582 A CN2013100252582 A CN 2013100252582A CN 201310025258 A CN201310025258 A CN 201310025258A CN 103136941 A CN103136941 A CN 103136941A
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Abstract
The invention discloses a coordination control method of a dissymmetric artery. Dissymmetric phases are designed according to a flow ratio of each strand traffic flow in the artery, the flow ratio of the traffic flow in the same phase is guaranteed to be close to the greatest extent, and waste of green time is reduced; in order to improve the utilization efficiency of the green time and guarantee the normal operation of each strand traffic flow at the same time, a computing method of each phase green time permitting intervals is set; a one-way coordination control best phase difference is put forward according to a gap of intersection, traffic flow travel speed and time needed by queued vehicle releasing of the coordination phase traffic flow in red time; at last the phase and phase sequence of the intersection, the coordination phase difference and the coordination green time are ensured according to each phase green time permitting intervals and the one-way best phase difference. The coordination control method can optimize a bi-directional coordination control effect when the artery traffic flow is in an unbalancing state, the phenomena that vehicles in the artery are delayed are reduced, and the utilization efficiency of a green light is improved. The coordination control method has practical engineering application value in an aspect of urban road traffic control management.
Description
Technical field
The present invention relates to a kind of traffic signal control method, be specifically related to a kind of asymmetric arterial road coordinate control method.
Background technology
At present, along with the increase at full speed of economic development and Urban vehicles poputation, the urban road traffic congestion problem is day by day serious.The arterial street is as the main artery of city road network, born the main pressure of traffic flow operation, and arterial street whether unimpeded is directly connected to whole road network traffic flow running quality.In urban road network, each crossing independently arranges single point signals when controlling, and owing to not coordinating, vehicle often can run into red light in the crossing, and time opens in the stopping time, causes vehicle to incur loss through delay and the increase of stop frequency.Be the contradiction between transport solution stream space and time continuous and the control of intersection single-point, can carry out unified coordination to a plurality of Adjacent Intersections on an arterial highway as a system in traffic control controls, this traffic signal control method is called arterial road coordinate control, the crossing that to carry out arterial road coordinate control is called coordinates to control the crossing, and the wagon flow that will carry out arterial road coordinate control is called coordinates to control wagon flow.Compare with isolated control of single crossing, coordinate to control and to realize the interlock of a plurality of crossings, reduce the delay of coordinating to control wagon flow.
In existing Urban arterial road coordinate control method, the method for comparative maturity has algebraic method and graphical method.Algebraic method is optimized phase differential between the crossing by desired pitch between the crossing and actual pitch are compared; Graphical method determines to coordinate to control timing parameter by drawing.These two kinds of arterial road coordinate control methods suppose that all each two-way coordination of coordinate controlling the crossing controls wagon flow and be in same signal phase, are all namely symmetrical arterial road coordinate control methods.Because must allowing the two-way coordination in each crossing control wagon flow, the arterial road coordinate control method of symmetry is in same signal phase, therefore when the arterial highway traffic flow is in imbalance, two strands of coordination control wagon flow flows that the crossing is controlled in coordination may differ larger, and at this moment they are in the significant wastage that same phase place must cause certain direction green time.Therefore, symmetrical arterial road coordinate control method is difficult to adapt to the unbalanced situation of arterial highway traffic flow.Simultaneously existing arterial road coordinate control method can not be optimized crossing phase place phase sequence, there is no the factor such as considering intersection red interval queuing vehicle to coordinating the poor impact of control phase, therefore also has in actual applications problems.
Summary of the invention
Goal of the invention: the deficiency that is not suitable with traffic flow imbalance in arterial street in order to overcome control method for coordinating in the past, the invention provides a kind of asymmetric arterial road coordinate control method, coordinate the phase place phase sequence and coordinate the wagon flow phase differential by optimization, realizing the asymmetric arterial road coordinate control when traffic flow is unbalanced.
Technical scheme: for achieving the above object, a kind of asymmetric arterial road coordinate control method of the present invention comprises the following steps:
1) selection is determined the crossing, arterial highway of coordinating to control and is coordinated to control wagon flow, and selected crossing directly connects in the arterial street and each other, and in coordinating control time, traffic flow is stablized; Coordinate to control wagon flow and control the crossing, arterial highway by all selected coordinations continuously;
2) the asymmetric arterial road coordinate control crossing magnitude of traffic flow, saturation volume rate, the phase loss time data that obtain according to investigation, adopt single point signals to control calculation method of parameters, signal period when calculating respectively each crossing single-point and controlling, get wherein maximal value as the common period of coordinating to control;
3) according to coordinating to control common period, in conjunction with the magnitude of traffic flow, the saturation volume rate of investigating crossing each burst wagon flow that obtains, calculate the permission interval that provides each burst wagon flow green time;
4) investigation asymmetric arterial road coordinate control crossing spacing, wagon flow travel speed, coordinate to control wagon flow red interval queuing vehicle number, calculate accordingly to provide and coordinate to control the unidirectional coordination of wagon flow to control optimum angle poor;
5) according to asymmetric arterial road coordinate control common period, each coordinate to control wagon flow green time allow interval, unidirectional coordination control optimum angle poor and each coordinate to control wagon flow throughput ratio and determine each crossing phase place phase sequence;
6) in the permission interval range of the corresponding green time of each burst wagon flow, adjust each phase place green time of crossing and make coordination wagon flow phase differential all reach the poor requirement of its corresponding unidirectional coordination control optimum angle; Satisfying on the basis of this condition, crossing phase place green time calculates to reduce delay by the isosaturation principle;
7) determine that finally asymmetric arterial highway coordinates phase differential and the green time between the two-way coordination wagon flow of crossing.
Wherein, in described step 3), the interval lower limit of the permission of described each burst wagon flow green time will guarantee that this burst wagon flow normally moves, that is: make this phase place saturation degree be not more than 0.9; The interval upper limit of the permission of each burst wagon flow green time will guarantee that other wagon flow normally moves, that is: make other phase place saturation degrees be not more than 0.9.
A kind of asymmetric arterial road coordinate control method that the present invention proposes can reduce coordinates to control wagon flow delay and stop frequency, optimizes crossing, arterial highway two-way coordination and controls effect.
Beneficial effect: a kind of asymmetric arterial road coordinate control method that the present invention proposes, it is advantageous that present situation unbalanced according to the arterial street traffic flow, crossing phase place phase sequence is carried out reasonably optimizing, consider that simultaneously coordinating to control wagon flow red interval queuing vehicle discharges required time, optimize unidirectional coordination optimum phase difference, proposed computing method between each phase place green time variable region, crossing, the optimization poor for the two-way coordination control phase provides maximum possible.Therefore, the present invention has engineering application value in the arterial street traffic coordinating is controlled.
Description of drawings
Fig. 1 is overview flow chart of the present invention;
Fig. 2 is asymmetric arterial road coordinate control crossing and coordinates to control the wagon flow schematic diagram;
Fig. 3 is crossing and the wagon flow schematic diagram in specific embodiment.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described.
As shown in Figure 1 to Figure 3, a kind of asymmetric arterial road coordinate control method of the present invention comprises the following steps:
1) selection is determined the crossing, arterial highway of coordinating to control and is coordinated to control wagon flow, requiring selected crossing must be in the arterial street and each other directly connects, coordinate to control the gateway that does not affect the arterial highway traffic flow between the crossing, in coordinating control time, traffic flow is stable, and the supersaturation situation do not occur; Coordinate to control wagon flow and should control the crossing, arterial highway by all selected coordinations continuously; For example, in selection Fig. 2, crossing 1, crossing 2, crossing 3 are asymmetric arterial road coordinate control crossing, and crossing 1, crossing 2, crossing 3 East and West direction craspedodrome wagon flows are asymmetric arterial road coordinate control wagon flow;
The data such as the asymmetric arterial road coordinate control crossing magnitude of traffic flow that 2) obtains according to investigation, saturation volume rate, phase loss time, adopt single point signals to control calculation method of parameters, signal period when calculating respectively each crossing single-point and controlling, get wherein maximal value as the common period of coordinating to control;
3) according to coordinating to control common period, in conjunction with the magnitude of traffic flow, the saturation volume rate of investigating crossing each burst wagon flow that obtains, calculate the permission interval that provides each burst wagon flow green time.Each burst wagon flow green time allows interval lower limit should be able to guarantee that this burst wagon flow normally moves, that is: make this phase place saturation degree be not more than 0.9; Each burst wagon flow green time allows the interval upper limit should be able to guarantee that other wagon flow normally moves, that is: make other phase place saturation degrees be not more than 0.9;
4) investigation asymmetric arterial road coordinate control crossing spacing, wagon flow travel speed, coordinate to control wagon flow red interval queuing vehicle number, calculate accordingly to provide and coordinate to control the unidirectional coordination of wagon flow to control optimum angle poor;
5) according to asymmetric arterial road coordinate control common period, each coordinate to control wagon flow green time allow interval, unidirectional coordination control optimum angle poor and each coordinate to control wagon flow throughput ratio and determine each crossing phase place phase sequence;
6) in the corresponding green time allowed band of each burst wagon flow, adjust each phase place green time of crossing and make coordination wagon flow phase differential all reach the poor requirement of its corresponding unidirectional coordination control optimum angle; Satisfying on the basis of this condition, crossing phase place green time calculates to reduce delay by the isosaturation principle;
7) determine that finally asymmetric arterial highway coordinates phase differential and the green time between the two-way coordination wagon flow of crossing.
For further illustrating the specific implementation process of the inventive method, two Adjacent Intersections describe as example on certain arterial street.known selection determines that the crossing, arterial highway of coordinating to control as shown in Figure 3, arterial road coordinate control is carried out with crossing 2 in crossing 1, the crossing spacing is 400 meters, 2 the two-way wagon flow travel speeds in crossing 1 and crossing are 10 meter per seconds, right-hand rotation wagon flow no signal is controlled, wagon flow 13, 16, 23, 26 are on branch road, dedicated Lanes do not turn left, therefore all there are 6 bursts of signal controlling wagon flows each crossing, wherein wagon flow 11, 14, 21, 24 for coordinating to control wagon flow, known each burst wagon flow phase loss is 3 seconds, in the crossing, each burst wagon flow parameter is as shown in table 1, when the crossing single-point is controlled, phase place is as shown in table 2.
Table 1 example crossing wagon flow correlation parameter
Phase place situation when table 2 example crossing single-point is controlled
Asymmetric arterial road coordinate control method computation process is as follows:
1) according to known crossing 1 and crossing 2 traffic flows and phase place situation, utilize Robert Webster computation of Period formula
Cycle duration when calculating respectively crossing 1 with crossing 2 single point signals control, when obtaining crossing 1 single-point control, the cycle is 93 seconds, and when crossing 2 single-points are controlled, the cycle is 62 seconds, and the control common period is coordinated in the higher value conduct in 93 seconds of getting both;
2) calculating each burst wagon flow green time allows interval.Take wagon flow 11 as example, be 0.2 by known wagon flow 11 throughput ratios of table 1, the saturation degree maximal value is 0.9, and split equals throughput ratio divided by saturation degree, therefore the split minimum value of wagon flow 11 is 0.2/0.9=2/9, it is 93 seconds that common period is controlled in known coordination, and therefore wagon flow 11 green times are minimum as can be known should be 93*2/9=21 second.In like manner can calculate wagon flow 13 green times minimum is 10 seconds, and wagon flow 15 green times are minimum is 31 seconds.When wagon flow 13 and wagon flow 15 were all got minimum green time, wagon flow 11 green times were 93-10-31-9=43 second, and namely wagon flow 11 green times are 43 seconds to the maximum.In like manner can calculate each burst wagon flow green time allows interval as table 3.
When table 3 is coordinated to control, each burst wagon flow green light allows interval
| The car stream number | Green time lower limit (second) | Green time higher limit (second) |
| 11 | 21 | 43 |
| 12 | 21 | 43 |
| 13 | 10 | 22 |
| 14 | 31 | 53 |
| 15 | 31 | 53 |
| 16 | 10 | 22 |
| 21 | 31 | 53 |
| 22 | 21 | 43 |
| 23 | 10 | 32 |
| 24 | 31 | 53 |
| 25 | 21 | 43 |
| 26 | 10 | 32 |
3) known crossing 1 is 400 meters with crossing 2 spacings, and the wagon flow travel speed is 10 meter per seconds, saturation volume rate and red light queuing vehicle number situation known to associative list 1, and calculating the unidirectional coordination in crossing 1 to crossing 2, to control optimum angle poor be 20 seconds; It is 30 seconds that the unidirectional coordination in crossing 2 to crossing 1 is controlled optimum angle poor;
4) by table 1, table 2 as can be known, crossing 2 traffic flows are balanced, and phase place shown in table 2 press when letting pass in crossing 1, and phase place 1 is unbalanced with the interior traffic flow throughput ratio of phase place 2, can cause green light to waste.Therefore phase optimization is carried out in crossing 1, adopt asymmetric Signal Phase Design, crossing 1 phase place after optimization is as shown in table 4:
The asymmetric phase optimization in table 4 crossing 1
5) through after phase optimization, the coordination wagon flow 11 of crossing 1 and coordination wagon flow 14 are in two different phase places.At this moment, two-way coordination is controlled and all can be satisfied the optimum phase difference requirement.It is 20 seconds that the unidirectional coordination in crossing 1 to crossing 2 is controlled optimum angle poor, be [21 between phase place 1 green zone, 43], at this moment, it may interval be [30 that the phase place phase differential is coordinated in crossing 2 to crossing 1,52], known crossing 2 to the crossing 1 unidirectional coordination to control optimum angle poor be 30 seconds, being in crossing 2 to crossing 1 coordination phase place phase differential may interval be [30,52] in, namely when crossing 1 to crossing 2 coordination phase place phase differential were got 20 seconds, two-way traffic stream all can be obtained optimal coordination and control effect;
6) for making two-way coordination control best results, 2 coordinated phase differential and got 20 seconds to the crossing by step 5 bosom friend prong 1, crossing 2 to crossing 1 is coordinated phase differential and was got 30 seconds, and this moment, crossing 1 phase place 1 long green light time was 43 seconds, phase place 2 long green light time 31 seconds, phase place 3 long green light time 10 seconds; It is 42 seconds that crossing 2 can calculate phase place 1 long green light time by the saturated timing method such as common, and phase place 2 long green light times are 28 seconds, and phase place 3 long green light times are 14 seconds.
In order to reflect intuitively that the present invention compares the advantage of traditional arterial highway control method for coordinating, the inventor coordinates timing with the asymmetric arterial road coordinate control method that algebraic method and the present invention propose to four Adjacent Intersections on certain arterial highway respectively, and utilize traffic simulation software VISSIM to carry out the trade-off effect evaluation, result is as shown in table 5 and table 6.
The asymmetric control method for coordinating of table 5 and algebraic method Contrast on effect (crossing 1 to 6 direction)
The asymmetric control method for coordinating of table 6 and algebraic method Contrast on effect (crossing 6 to 1 directions)
Can find out by table 5 and table 6: it is better that effect is controlled in the coordination of the method that the present invention proposes under the unbalanced condition in arterial highway, and vehicle is incured loss through delay and stop frequency all is significantly less than traditional algebraic method.
A kind of asymmetric arterial road coordinate control method of the present invention is a kind of two-way arterial road coordinate control method when unbalanced for the arterial street traffic flow.When urban road arterial highway traffic flow is in non-equilibrium state (on the traffic tidal phenomena that occurs as periods such as peaks on and off duty, two-way road, the queue length difference is larger); adopt traditional symmetrical control method for coordinating poor effect, the waste of traffic congestion and green time often can occur.The present invention is directed to above-mentioned situation, proposed a kind of asymmetric arterial road coordinate control method, carry out asymmetric Signal Phase Design according to the throughput ratio of arterial highway each burst wagon flow, guarantee that as far as possible in same phase place, the wagon flow throughput ratio is close, reduce the green time waste; To reduce the waste of phase place green light, to guarantee that wagon flow normally operates to constraint, provided each phase place green time and allowed interval; Propose unidirectional coordination according to crossing spacing, wagon flow travel speed and coordination phase place wagon flow red interval queuing vehicle clearance required time simultaneously and control the proposition optimum phase difference.Finally allow interval and unidirectional optimum phase difference to determine crossing phase place phase sequence, coordinate phase differential and phase place green time according to each phase place green time.When the method that the present invention proposes can be optimized the arterial highway traffic flow and is in non-equilibrium state, two-way coordination is controlled effect, reduces the arterial highway vehicle and incurs loss through delay, improves the green light utilization ratio, has actual engineering application at the urban road transportation control management aspect and is worth.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the prerequisite that does not break away from the principle of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (2)
1. asymmetric arterial road coordinate control method is characterized in that comprising the following steps:
1) selection is determined the crossing, arterial highway of coordinating to control and is coordinated to control wagon flow, and selected crossing directly connects in the arterial street and each other, and in coordinating control time, traffic flow is stablized; Coordinate to control wagon flow and control the crossing, arterial highway by all selected coordinations continuously;
2) the asymmetric arterial road coordinate control crossing magnitude of traffic flow, saturation volume rate, the phase loss time data that obtain according to investigation, adopt single point signals to control calculation method of parameters, signal period when calculating respectively each crossing single-point and controlling, get wherein maximal value as the common period of coordinating to control;
3) according to coordinating to control common period, in conjunction with the magnitude of traffic flow, the saturation volume rate of investigating crossing each burst wagon flow that obtains, calculate the permission interval that provides each burst wagon flow green time;
4) investigation asymmetric arterial road coordinate control crossing spacing, wagon flow travel speed, coordinate to control wagon flow red interval queuing vehicle number, calculate accordingly to provide and coordinate to control the unidirectional coordination of wagon flow to control optimum angle poor;
5) according to asymmetric arterial road coordinate control common period, each coordinate to control wagon flow green time allow interval, unidirectional coordination control optimum angle poor and each coordinate to control wagon flow throughput ratio and determine each crossing phase place phase sequence;
6) in the permission interval range of the corresponding green time of each burst wagon flow, adjust each phase place green time of crossing and make coordination wagon flow phase differential all reach the poor requirement of its corresponding unidirectional coordination control optimum angle; Satisfying on the basis of this condition, crossing phase place green time calculates to reduce delay by the isosaturation principle;
7) determine that finally asymmetric arterial highway coordinates phase differential and the green time between the two-way coordination wagon flow of crossing.
2. asymmetric arterial road coordinate control method according to claim 1 is characterized in that: in described step 3), the interval lower limit of the permission of described each burst wagon flow green time will guarantee that this burst wagon flow normally moves, that is: make this phase place saturation degree be not more than 0.9; The interval upper limit of the permission of each burst wagon flow green time will guarantee that other wagon flow normally moves, that is: make other phase place saturation degrees be not more than 0.9.
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| CN103778792A (en) * | 2014-01-09 | 2014-05-07 | 东南大学 | Urban trunk one-way green wave control optimization method considering vehicle speed non-uniformity |
| CN103794065A (en) * | 2014-01-24 | 2014-05-14 | 东南大学 | Active urban road area signal timing parameter collaborative optimization method |
| CN106504549A (en) * | 2014-09-26 | 2017-03-15 | 张久明 | Method for controlling traffic signal lights |
| CN107564304A (en) * | 2017-09-13 | 2018-01-09 | 山东理工大学 | A kind of large-scale Junction on bend ahead mouth three-dimensional green wave coordination control method |
| CN108346302A (en) * | 2018-03-20 | 2018-07-31 | 青岛海信网络科技股份有限公司 | A kind of two-way green wave coordination control method and device |
| CN108734973A (en) * | 2018-05-18 | 2018-11-02 | 中南大学 | A kind of phase of main line two-way green wave-signal synthesis optimization method |
| CN109493618A (en) * | 2018-12-05 | 2019-03-19 | 山东星志智能交通科技有限公司 | A kind of urban traffic signal control system mains phase difference calculation method |
| CN110414708A (en) * | 2019-06-10 | 2019-11-05 | 上海旷途科技有限公司 | Tide lane optimization scheme selection method and device and storage medium |
| CN110634308A (en) * | 2019-09-26 | 2019-12-31 | 同济大学 | Single-intersection signal control method based on vehicle queuing dissipation time |
| WO2020108216A1 (en) * | 2018-11-30 | 2020-06-04 | 江苏智通交通科技有限公司 | Rationality analysis and coordination mode configuration method for coordinated trunk road |
| CN111311949A (en) * | 2020-02-29 | 2020-06-19 | 华南理工大学 | Signal phase and phase sequence optimization method for non-closed type coordinated line network |
| CN113516856A (en) * | 2021-06-23 | 2021-10-19 | 东南大学 | Trunk line coordination control method considering road running speed and intersection traffic state |
| CN113706895A (en) * | 2021-08-31 | 2021-11-26 | 深圳大学 | Optimization method, device and equipment for main channel phase difference and computer storage medium |
| CN115116217A (en) * | 2022-05-26 | 2022-09-27 | 东北林业大学 | Dynamic measuring and calculating method and system for lane saturation flow rate and start loss time |
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| CN103778792B (en) * | 2014-01-09 | 2015-04-15 | 东南大学 | Urban trunk one-way green wave control optimization method considering vehicle speed non-uniformity |
| CN103778792A (en) * | 2014-01-09 | 2014-05-07 | 东南大学 | Urban trunk one-way green wave control optimization method considering vehicle speed non-uniformity |
| CN103794065A (en) * | 2014-01-24 | 2014-05-14 | 东南大学 | Active urban road area signal timing parameter collaborative optimization method |
| CN106504549A (en) * | 2014-09-26 | 2017-03-15 | 张久明 | Method for controlling traffic signal lights |
| CN107564304A (en) * | 2017-09-13 | 2018-01-09 | 山东理工大学 | A kind of large-scale Junction on bend ahead mouth three-dimensional green wave coordination control method |
| CN108346302A (en) * | 2018-03-20 | 2018-07-31 | 青岛海信网络科技股份有限公司 | A kind of two-way green wave coordination control method and device |
| CN108734973A (en) * | 2018-05-18 | 2018-11-02 | 中南大学 | A kind of phase of main line two-way green wave-signal synthesis optimization method |
| WO2020108216A1 (en) * | 2018-11-30 | 2020-06-04 | 江苏智通交通科技有限公司 | Rationality analysis and coordination mode configuration method for coordinated trunk road |
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| CN110634308A (en) * | 2019-09-26 | 2019-12-31 | 同济大学 | Single-intersection signal control method based on vehicle queuing dissipation time |
| CN111311949A (en) * | 2020-02-29 | 2020-06-19 | 华南理工大学 | Signal phase and phase sequence optimization method for non-closed type coordinated line network |
| CN111311949B (en) * | 2020-02-29 | 2021-07-16 | 华南理工大学 | Signal phase and phase sequence optimization method for non-closed type coordinated line network |
| CN113516856A (en) * | 2021-06-23 | 2021-10-19 | 东南大学 | Trunk line coordination control method considering road running speed and intersection traffic state |
| CN113516856B (en) * | 2021-06-23 | 2022-11-04 | 东南大学 | Trunk line coordination control method considering road running speed and intersection traffic state |
| CN113706895A (en) * | 2021-08-31 | 2021-11-26 | 深圳大学 | Optimization method, device and equipment for main channel phase difference and computer storage medium |
| CN115116217A (en) * | 2022-05-26 | 2022-09-27 | 东北林业大学 | Dynamic measuring and calculating method and system for lane saturation flow rate and start loss time |
| CN115116217B (en) * | 2022-05-26 | 2023-09-26 | 东北林业大学 | Dynamic measuring and calculating method and system for saturation flow rate and starting loss time of lane |
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Application publication date: 20130605 |