CN109377753A - Coordinate direction and repeats the Trunk Road Coordination optimization method let pass - Google Patents
Coordinate direction and repeats the Trunk Road Coordination optimization method let pass Download PDFInfo
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Abstract
The present invention provides the Trunk Road Coordination optimization method that a kind of repetition of coordination direction is let pass, time space graph is drawn on the basis of acquisition intersection signal control scheme, identify the repetition clearance situation in the common period of crossing, it is based respectively on Trunk Road Coordination model to solve each situation, final comparison obtains Trunk Road Coordination optimal case；This kind coordinates direction and repeats the Trunk Road Coordination optimization method let pass, for binary cycle at this stage, big minor cycle Trunk Road Coordination is the status by artificially judging test, Trunk Road Coordination of the invention considers the cycle studies for coordinating crossing with common period, multiple coordination clearance phase existing in common period is solved respectively as the coordination stage, circulation obtains optimal Trunk Road Coordination scheme, substantially increase the efficiency of Trunk Road Coordination, it originally there is repetition clearance in face of crossing simultaneously, the complicated states such as lapping phases, provide the method for efficient Trunk Road Coordination optimization.
Description
Technical field
The present invention relates to a kind of Trunk Road Coordination optimization methods that coordination direction repeats to let pass.
Background technique
Urban traffic signal control is the important component of urban transportation, and with the development of urbanization process, traffic
Congestion problems are on the rise, main line and regional signal coordinated control because its coordinated control advantage, at main in recent years
One of research contents.Especially Arterial Coordination Control, because it improves arterial traffic speed, stop frequency is reduced, and reduction is rushed red
Generally acknowledged " effective way of reduction intersection delay of countries in the world has been obtained in the advantages such as lamp phenomenon and rear-end collision probability
Diameter ".
" repeat let pass " refers to that within the signal period, certain passes through phase multiple stage P Passables the case where.At this stage dry
Line coordination optimization believes that control engineer by main line on-site investigation, utilizes maximum green wave band MAXBAND model, how green wave by traffic
The methods of bandwidth MULTIBAND model optimizes adjustment, wherein the signal period of the common period duration of main line and each crossing
Duration is to believe that control engineer by virtue of experience configures by traffic.This with experience is the leading method low efficiency distributed rationally
Down and a large amount of manpowers are expended, traffic letter control engineer rule of thumb continuous testing and debugging is needed, if the signal control at certain crossing itself
There is " repeatedly letting pass " situation in scheme processed, then " the repeating to let pass " in the Trunk Road Coordination common signal period proposes Trunk Road Coordination optimization
Bigger difficulty requirement is gone out, wherein which section long green light time is selected to become a big problem as the coordination stage.For public week
How the situation for coordinating direction " repeating to let pass " in phase, realize the Automatic Optimal of Trunk Road Coordination, improving Trunk Road Coordination efficiency is to grind
One of emphasis studied carefully.
Summary of the invention
The object of the present invention is to provide a kind of Trunk Road Coordination optimization methods that coordination direction repeats to let pass, for common period
The case where interior coordination direction " repeating to let pass ", the efficiency of repetition direction Trunk Road Coordination optimization is improved, reduces letter control personnel's
Workload, solving Trunk Road Coordination under complex situations at this stage existing in the prior art needs personnel's rule of thumb repeatedly adjustment test
The problem of optimization.
The technical solution of the invention is as follows:
A kind of coordination direction repeats the Trunk Road Coordination optimization method of clearance, draws on the basis of acquisition intersection signal control scheme
Time space graph processed identifies the repetition clearance situation in the common period of crossing, is based respectively on Trunk Road Coordination model and solves to each situation, most
Comparison obtains Trunk Road Coordination optimal case eventually；Include the following steps,
S1, docking traffic signal control system, acquire the basic information and signal timing plan at crossing, determine and coordinate main line
And its coordination direction at each crossing；
S2, common period and its each crossing cycle duration are determined based on the signal timing plan for coordinating each crossing of main line, and
Each signal control timing scheme for coordinating crossing is optimized；
S3, repeating to let pass to crossing coordination direction based on drafting coordination main line time space graph identifies, determines that main line is square
Coordinate number of passing through N in direction into common period；
S4, are solved based on number of passing through N in step S3 determining forward and reverse coordination direction common period respectively will be public
Certain section of long green light time is set as coordinating under phase condition respectively letter control crossing parameter index related with signal timing dial in period；
S5, coordinate number of passing through based on common period, circulation solves bandwidth and phase difference optimal solution between outlet, as dry
The optimal coordinate scheme of line.
Further, step S2 specifically,
S21, each signal timing plan for coordinating crossing is subjected to the cycle duration that integration determines each crossing, specifically, really
Determine common period duration C, and by the cycle duration c of existing intersection signal control schemeiCompared with common period C, determination can match
It is set to crossing and its cycle duration c ' of binary cycle or big minor cyclei；
When S22, maximum long green light time/minimum based on phase in signal timing plan in step S1 are green duration and
The cycle duration that S21 step obtains optimizes the allocation plan at each crossing.
Further, step S22 specifically,
S221, the crossing period c ' optimized and revised according to step S21iWith original crossing period ciPhase it is green when ratio cci
It is scaled to obtain the long green light time g ' of phaseij；
S222, the maximum long green light time based on each phase of signal timing planWith minimum long green light time
The phase long green light time g ' that step S221 is solvedijIt is adjusted.
Further, in step S221, each phase long green light time are as follows:
g′ij=αi*gij
In formula, g 'ijFor the crossing i j phase long green light time adjusted, gijFor the initial green of the crossing i j phase
Lamp duration, αiRatio when green for the crossing i phase, c 'iFor cycle duration adjusted, ciFor initial period duration；If crossing simultaneously
Traffic signal control scheme is there are locking phase, then ratio cc when phase is greeniNeed to reject the long green light time of locking phase when solution
gI lock, it may be assumed that
Further, step S222 specifically,
If S2221, the phase long green light time optimized and revisedThe then long green light time contracting of the crossing i j phase
Reduce to maximum long green light timeThe ratio beta when long green light time of reduction presses greenijIt is extended to the non-adjustment phase place stage within the period
Phase coordinates the long green light time at the crossing in addition to coordinating crossing on main line are as follows:
In formula, βijFor the crossing i j phase it is green when ratio；gijFor the initial long green light time of the crossing i j phase；ci
For initial period duration；(g′ij) ' for the long green light time of rejecting the j stage in the periodic regime of the crossing i after locking phase；If institute simultaneously
There is phase to be all larger than maximum long green light time, then crossing cycle duration is adjusted to common period；
If S2222, the crossing phase long green light time optimized and revisedThen when the green light of the crossing i j phase
Length is extended to minimum long green light timeRatio beta when increased long green light time presses greenijIt is contracted in periodic regime except coordination phase
Other outer phases, if while all optimization phases be respectively less than minimum long green light time, the cycle duration at crossing is adjusted to public
Period；
If S2223, the crossing phase long green light time preferentially adjustedIt is then direct without adjustment
Go to step S3.
Further, step S3 specifically,
S31, each main line in crossing is optimized and revised after signal timing plan summarize, using common period C as cycle duration,
Coordination direction phase is long green light time, and non-coordinating direction phase is that red light duration draws out time space graph, so that it is determined that going out just
Red light duration T in opposite direction common period Cred, red signal interval [TIt opens, TKnot] and red signal interval in red light duration tred；Wherein,
Red signal interval [TIt opens, TKnot] refer in common period red light start time to reach coordinate the phase directional stage recently at the time of, wherein
TIt opensFor red light start time, TKnotFor green light start time, while the red light duration t in red signal intervalred=TIt opens—TKnot；
S32, compare red light duration t in red signal intervalredWith the red light duration T in common period Cred, determine forward and reverse
Coordinate number of passing through N in the common period of direction.
Further, step S32 specifically,
If forward and reverse red signal interval is equal to the red light duration in common period C, i.e. tred=Tred, then the crossing positive direction
Coordinate direction and do not have the period and can only pass through primary, number of passing through N=1, stores the red light and start over red light center constantly pair
Moment TIn, pass directly to step S4；
Otherwise, label crossing, which exists, repeats flow direction of letting pass, and determines that all red lights start over constantly right in common period, i.e.,
Number of passing through N in the common period of forward and reverse coordination direction, while the red light central instant in each group red signal interval is stored respectivelyAnd go to step S4.
Further, step S4 is specifically, solve outlet based on number of passing through N in the common period of forward and reverse coordination direction
Forward and reverse red time rate Δ in every caseinAnd positive red light central instant is to its close reversed red light central instant
Time rate δin；Wherein, in common period when number of passing through N >=2, certain section of long green light time in common period is set as coordinating phase respectively
Other green times are set as red time and solved by position, it may be assumed that
In formula, ΔinFor red time rate in the case of the n of the crossing i, including positive red time rateWith reversed red light
Time rate For based on the red light duration in the step S3 determining crossing i common period C；C is common period duration；δin
For the time rate of forward and reverse red light central instant in the case of the n of the crossing i；For the positive red light in the case of the n of the crossing i
Central instant；For reversed red light central instant similar in the case of the n of the crossing i.
It further,, respectively will be in common period for the crossing in common period when number of passing through N >=2 in step S4
Certain section of long green light time is set as coordinating phase condition, establishes outlet situation parameter index table, including crossing number, coordinate direction,
Situation serial number, common period duration, coordinates moment section, is positive red time rate, reversed red time rate, positive and negative both forward and reverse directions
To the time rate of red light central instant.
Further, step S5 specifically,
S51, forward and reverse speed according to setting, solve forward and reverse journey time, it may be assumed that
In formula, LiFor the crossing i to the distance at next crossing, viFor forward and reverse car speed, TiIt is positive the reverse stroke time；
S52, the parameter values incoming trunk Coordination Model for solving forward and reverse formation time of step S51 and step S4
In, circulation solves bandwidth and phase difference between outlet, wherein the number recycled is current in the common period of forward and reverse coordination direction
Times N；
S53, the solution that certain section of long green light time in each common period is set as coordinating phase is summarized, and to objective function
Bandwidth and phase difference carry out ranking between maximum crossing, select optimal solution as Trunk Road Coordination scheme.
The beneficial effects of the present invention are: this kind, which coordinates direction, repeats the Trunk Road Coordination optimization method let pass, at this stage
Binary cycle, big minor cycle Trunk Road Coordination are the statuses by artificially judging test, and Trunk Road Coordination of the invention is to coordination crossing
Cycle studies are considered with common period, to multiple coordination clearance phase existing in common period respectively as coordination
Stage is solved, and circulation obtains optimal Trunk Road Coordination scheme, substantially increases the efficiency of Trunk Road Coordination, while facing crossing
Originally the complicated states such as repetition clearance, lapping phases be there is, the method for efficient Trunk Road Coordination optimization is provided.
Detailed description of the invention
Fig. 1 is the flow diagram that the embodiment of the present invention coordinates that direction repeats the Trunk Road Coordination optimization method let pass.
Specific embodiment
The preferred embodiment that the invention will now be described in detail with reference to the accompanying drawings.
Embodiment
Choose which section is used as the coordination stage for direction " repeat let pass " is coordinated in common period, how reasonable high efficiency
The problem of optimizing Trunk Road Coordination signaling plan, embodiment propose that a kind of coordination direction repeats the Trunk Road Coordination optimization method let pass,
Crossing basic information and scheme information are acquired, determines the period type and optimization of road joints traffic signal control scheme at crossing, herein
On the basis of identify " repeat let pass " stage in common period, each stage is defaulted as the coordination stage respectively and solves model ginseng
Number, so that Trunk Road Coordination mold cycle be relied on to obtain optimal solution.
A kind of coordination direction repeats the Trunk Road Coordination optimization method of clearance, draws on the basis of acquisition intersection signal control scheme
Time space graph processed identifies the repetition clearance situation in the common period of crossing, is based respectively on Trunk Road Coordination model and solves to each situation, most
Comparison obtains Trunk Road Coordination optimal case eventually.Such as Fig. 1, specifically includes the following steps:
S1. traffic signal control system is docked, the basic information and signal timing plan at crossing are acquired, determines and coordinates main line
And its coordination direction at each crossing.
S11. the basic information and signal timing plan at each crossing in road network are acquired.Specifically, basic information includes canal
Change characteristic information, detection device information, lamp group information, conventional current phase, signal timing plan specifically include operation plan, when
Section division, benchmark long green light time/maximum long green light time of each phase and minimum long green light time.
S12. the main line of signal coordinating is configured.Specifically, the signal controlled junctions coordinated and its each road are determined
The coordination direction of mouth solves the distance between each coordination crossing, positive/negative to speed between each coordination crossing of setting, in turn
Specific signal timing plan is determined based on step S11.
S2. common period and its each crossing cycle duration are determined based on the signal timing plan for coordinating each crossing of main line, and
Each signal control timing scheme for coordinating crossing is optimized.
S21. each signal timing plan for coordinating crossing is subjected to the cycle duration that integration determines each crossing, wherein traffic needs
Numerical value is asked to be determined by the magnitude of traffic flow that crossing detection device acquires.Specifically, common period duration C is determined, and by existing road
The cycle duration c of mouth signal timing planiCompared with common period C, the crossing that can be configured to binary cycle or big minor cycle is determined
And its cycle duration c 'i。
It is, in general, that according to Trunk Road Coordination optimize common knowledge, by the existing signal timing plan in each coordination crossing most
Crossing where it is defaulted as the key crossing of Trunk Road Coordination as common period C by large period.Simultaneously according to periodic ratioGreatly
The period type at small determining crossing, in which:
In formula,For periodic ratio；ciFor the existing signal timing plan cycle duration in the crossing i；C is common period duration.Together
When periodic ratioCorresponding period type is as follows.
S22. when maximum long green light time/minimum based on phase in signal timing plan in step S1 is green duration and
The cycle duration that step S21 is obtained optimizes the allocation plan at each crossing.
S221. the crossing period c ' optimized and revised according to step S21iWith original crossing period ciPhase it is green when ratio cci
It is scaled to obtain the long green light time g ' of phaseij.Specifically, each phase long green light time are as follows:
g′ij=ai*gij
In formula, g 'ijFor the crossing i j phase long green light time adjusted, gijFor the initial green of the crossing i j phase
Lamp duration, αiRatio when green for the crossing i phase, c 'iFor cycle duration adjusted, ciFor initial period duration.If crossing simultaneously
Traffic signal control scheme is there are locking phase, then ratio cc when phase is greeniNeed to reject the long green light time of locking phase when solution
gI lock, i.e.,
S222. the maximum long green light time based on each phase of signal timing planWith minimum long green light time
The phase long green light time g ' that step S221 is solvedijIt is adjusted.
Specifically, 1) if the phase long green light time optimized and revisedThen when the green light of the crossing i j phase
Length is reduced to maximum long green light timeThe ratio beta when long green light time of reduction presses greenijIt is extended to non-adjustment phase place rank within the period
The phase of section coordinates the long green light time at the crossing in addition to coordinating crossing on main line are as follows:
In formula, βijFor the crossing i j phase it is green when ratio；gijFor the initial long green light time of the crossing i j phase；ci
For initial period duration；(g′ij) ' for the long green light time of rejecting the j stage in the periodic regime of the crossing i after locking phase；If institute simultaneously
There is phase to be all larger than maximum long green light time, then crossing cycle duration is adjusted to common period；
If 2) the crossing phase long green light time optimized and revisedThen the long green light time of the crossing i j phase expands
Big extremely minimum long green light timeRatio beta when increased long green light time presses greenijIt is contracted in periodic regime in addition to coordinating phase
Other phases, if while all optimization phases be respectively less than minimum long green light time, the cycle duration at crossing is adjusted to public week
Phase；
If 3) the crossing phase long green light time preferentially adjustedThen passed directly to without adjustment
Step S3.
S3. crossing coordination direction is repeated to let pass based on drafting coordination main line time space graph and is identified, determine that main line is square
Coordinate number of passing through N in direction into common period.
S31. the signal timing plan after each main line in crossing being optimized and revised summarizes, using common period C as cycle duration,
Coordination direction phase is long green light time, and non-coordinating direction phase is that red light duration draws out time space graph, so that it is determined that going out just
Red light duration T in opposite direction common period Cred, red signal interval [TIt opens, TKnot] and red signal interval in red light duration tred.Specifically
For, red signal interval [TIt opens, TKnot] refer in common period red light start time to reach coordinate the phase directional stage recently at the time of,
Wherein TIt opensFor red light start time, TKnotFor green light start time, while the red light duration t in red signal intervalred=TIt opens—TKnot.One
As for repetition direction situation, there are multiple red signal intervals in the common period of crossing.
Such as the timing scheme that a cycle is 100 seconds, then two common periods are 200s, before coordination direction is in forward direction
50s, then red light starts over constantly to for [50,100] and [150,200], and red light starts over a length of when red light constantly pair
50s。
S32. compare the red light duration t in red signal intervalredWith the red light duration T in common period Cred, determine forward and reverse
Coordinate number of passing through N in the common period of direction.
Specifically, if forward and reverse red signal interval is equal to the red light duration in common period C, i.e. tred=Tred, then should
Crossing positive direction coordinates direction and there is not the period and can only pass through primary, number of passing through N=1, store the red light start over it is constantly right
Red light central instant TIn, pass directly to step S4.
Otherwise label crossing, which exists, repeats flow direction of letting pass, and determines that all red lights start over constantly right in common period, i.e.,
Number of passing through N in the common period of forward and reverse coordination direction, while the red light central instant in each group red signal interval is stored respectively
And go to step S4；Under normal circumstances, binary cycle, big minor cycle and the crossing for coordinating direction repetition clearance, exist and coordinate
Direction repeats situation, i.e., number of passing through N >=2 in common period.
S4. number of passing through N is to crossing direction mode in the forward and reverse coordination direction common period determined based on previous step
It is solved respectively, and determines and certain section of long green light time in common period is set as under the different situations for coordinating phase respectively letter control crossing
Parameter index related with signal timing dial.
Specifically, outlet is being solved in every case just based on number of passing through N in the common period of forward and reverse coordination direction
Reversed red time rate ΔinAnd positive red light central instant is to the time rate δ of its close reversed red light central instantin:
Wherein in common period when number of passing through N >=2, certain section of long green light time in common period is set as coordinating phase respectively
Other green times are set as red time and solved by position, it may be assumed that
In formula, ΔinFor red time rate in the case of the n of the crossing i, including positive red time rateWith reversed red light
Time rate For based on the red light duration in the determining crossing the i common period C of S3 step；C is common period duration；δin
For the time rate of forward and reverse red light central instant in the case of the n of the crossing i；For the positive red light in the case of the n of the crossing i
Central instant；For reversed red light central instant similar in the case of the n of the crossing i.
Outlet situation parameter index table is established further directed to the crossing in more situations, table content includes: that crossing is compiled
Number, coordinate direction, situation serial number, both forward and reverse directions, common period duration, coordinate moment section, positive red time rate, reversed red light
The time rate of time rate, forward and reverse red light central instant.
Such as coordinate main line crossing A in common period 100s, coordinates direction as north and south straight trip, south straight trip is positive and deposits
Clearance situation is being repeated, phase is as follows:
| North and south straight trip | Turn left in north and south | Nantong row | Thing straight trip | Thing turns left |
| 25 | 15 | 15 | 16 | 12 |
Its Central-South straight trip is then asked as the coordination stage respectively there are two sections of clearance stages, i.e. [0,25], [46,61]
Solution, obtained crossing situation parameter index table are as follows:
S5. number of passing through is coordinated based on common period, circulation solves bandwidth and phase difference optimal solution between outlet, as dry
The optimal coordinate scheme of line.
S51. according to forward and reverse speed of setting, forward and reverse journey time is solved, it may be assumed that
In formula, LiFor the crossing i to the distance at next crossing, viFor forward and reverse car speed, TiIt is positive the reverse stroke time.
S52. the parameter values incoming trunk Coordination Model solved forward and reverse formation time of step S51 and step S4
In, circulation solves bandwidth and phase difference between outlet, wherein the number recycled is current in the common period of forward and reverse coordination direction
Times N.Under normal circumstances, selectable Trunk Road Coordination model includes MAXBAND and MULTIBAND.
S53. the various solutions for being set as coordinating phase with certain section of long green light time in common period are summarized, and to target
Bandwidth and phase difference carry out ranking between the maximum crossing of function, select optimal solution as Trunk Road Coordination scheme.
This kind coordinates direction and repeats the Trunk Road Coordination optimization method let pass, and repeats to coordinate to let pass for existing in common period
The crossing in stage, the moment is let pass in the coordination in common period for the proposition of innovation and red light starts over constantly to this concept,
It wherein one section of conduct will coordinate phase respectively, it is close reversed to its with positive red light central instant to solve red time rate
The time rate of red light central instant, and substituted into Trunk Road Coordination model as parameter, circulation solves and obtains Trunk Road Coordination side
Case.
This kind coordinates direction and repeats the Trunk Road Coordination optimization method let pass, and proposes phase each in crossing signals scheme
Maximum/minimum long green light time as restrictive condition, when optimizing each stage duration of signaling plan according to the cycle duration of configuration,
Conflict then based on maximum/minimum long green light time if it exists, improves the reasonability of Trunk Road Coordination configuration.
Claims (10)
1. a kind of Trunk Road Coordination optimization method coordinated direction and repeat to let pass, it is characterised in that: acquisition intersection signal control scheme
On the basis of draw time space graph, identify the repetition clearance situation in the common period of crossing, be based respectively on Trunk Road Coordination model to each
Situation solves, and final comparison obtains Trunk Road Coordination optimal case；Include the following steps,
S1, docking traffic signal control system, acquire the basic information and signal timing plan at crossing, determine coordinate main line and its
The coordination direction at each crossing；
S2, common period and its each crossing cycle duration are determined based on the signal timing plan for coordinating each crossing of main line, and to each
The signal control timing scheme for coordinating crossing optimizes；
S3, repeating to let pass to crossing coordination direction based on drafting coordination main line time space graph identifies, determines main line positive direction public affairs
Coordinate direction number of passing through N in the period altogether；
Number of passing through N is solved common period respectively in forward and reverse coordination direction common period that S4, are determined based on step S3
Interior certain section of long green light time is set as coordinating under phase condition respectively letter control crossing parameter index related with signal timing dial；
S5, coordinate number of passing through based on common period, bandwidth and phase difference optimal solution, as main line be most between circulation solves outlet
Excellent coordinate scheme.
2. coordinating direction as described in claim 1 repeats the Trunk Road Coordination optimization method let pass, it is characterised in that: step S2 tool
Body is,
S21, each signal timing plan for coordinating crossing is subjected to the cycle duration that integration determines each crossing, specifically, determining public
Cycle duration C altogether, and by the cycle duration c of existing intersection signal control schemeiCompared with common period C, determination be can be configured to
Binary cycle or the crossing of big minor cycle and its cycle duration c 'i；
Duration and S21 when S22, maximum long green light time/minimum based on phase in signal timing plan in step S1 are green
The cycle duration that step obtains optimizes the allocation plan at each crossing.
3. coordinating direction as claimed in claim 2 repeats the Trunk Road Coordination optimization method let pass, it is characterised in that: step S22
Specifically,
S221, the crossing period c ' optimized and revised according to step S21iWith original crossing period ciPhase it is green when ratio cciBy than
Example adjustment obtains the long green light time g ' of phaseij；
S222, the maximum long green light time based on each phase of signal timing planWith minimum long green light timeTo step
The phase long green light time g ' that rapid S221 is solvedijIt is adjusted.
4. coordinating direction as claimed in claim 3 repeats the Trunk Road Coordination optimization method let pass, it is characterised in that: step S221
In, each phase long green light time are as follows:
g′ij=αi*gij
In formula, g 'ijFor the crossing i j phase long green light time adjusted, gijFor the crossing i j phase initial green light when
It is long, αiRatio when green for the crossing i phase, c 'iFor cycle duration adjusted, ciFor initial period duration；If crossing traffic simultaneously
Signal timing plan is there are locking phase, then ratio cc when phase is greeniNeed to reject the long green light time g of locking phase when solutionI lock,
That is:
5. coordinating direction as claimed in claim 3 repeats the Trunk Road Coordination optimization method let pass, it is characterised in that: step S222
Specifically,
If S2221, the phase long green light time optimized and revisedThen the long green light time of the crossing i j phase is reduced to
Maximum long green light timeThe ratio beta when long green light time of reduction presses greenijIt is extended to the phase in non-adjustment phase place stage within the period
That is, coordinate the long green light time at the crossing in addition to coordinating crossing on main line in position are as follows:
In formula, βijFor the crossing i j phase it is green when ratio；gijFor the initial long green light time of the crossing i j phase；ciIt is first
Beginning cycle duration；(g′ij) ' for the long green light time of rejecting the j stage in the periodic regime of the crossing i after locking phase；If all phases simultaneously
The position stage is all larger than maximum long green light time, then crossing cycle duration is adjusted to common period；
If S2222, the crossing phase long green light time optimized and revisedThen the long green light time of the crossing i j phase expands
Big extremely minimum long green light timeRatio beta when increased long green light time presses greenijIt is contracted in periodic regime in addition to coordinating phase
His phase, if while all optimization phases be respectively less than minimum long green light time, the cycle duration at crossing is adjusted to common period；
If S2223, the crossing phase long green light time preferentially adjustedThen passed directly to without adjustment
Step S3.
6. direction as described in any one in claim 1-5 of coordinating repeats the Trunk Road Coordination optimization method let pass, it is characterised in that:
Step S3 specifically,
S31, each main line in crossing is optimized and revised after signal timing plan summarize, using common period C as cycle duration, coordinate
Direction phase is long green light time, and non-coordinating direction phase is that red light duration draws out time space graph, so that it is determined that positive negative side out
Red light duration T into common period Cred, red signal interval [TIt opens, TKnot] and red signal interval in red light duration tred；Wherein, red light
Period [TIt opens, TKnot] refer in common period red light start time to reach coordinate the phase directional stage recently at the time of, wherein TIt opensFor
Red light start time, TKnotFor green light start time, while the red light duration t in red signal intervalred=TIt opens—TKnot；
S32, compare red light duration t in red signal intervalredWith the red light duration T in common period Cred, determine forward and reverse coordination
Number of passing through N in the common period of direction.
7. coordinating direction as claimed in claim 6 repeats the Trunk Road Coordination optimization method let pass, it is characterised in that: step S32
Specifically,
If forward and reverse red signal interval is equal to the red light duration in common period C, i.e. tred=Tred, then the crossing positive direction is coordinated
Direction there is not the period and can only pass through primary, number of passing through N=1, stores the red light and starts over red light central instant constantly pair
TIn, pass directly to step S4；
Otherwise, label crossing, which exists, repeats flow direction of letting pass, and determines that all red lights start over constantly right in common period, i.e., positive and negative
The number of passing through N into coordination direction common period, while the red light central instant in each group red signal interval is stored respectivelyAnd turn
To step S4.
8. direction as described in any one in claim 1-5 of coordinating repeats the Trunk Road Coordination optimization method let pass, it is characterised in that:
Step S4 is specifically, forward and reverse in every case based on number of passing through N solution outlet in the common period of forward and reverse coordination direction
Red time rate ΔinAnd positive red light central instant is to the time rate δ of its close reversed red light central instantin；Wherein,
In common period when number of passing through N >=2, certain section of long green light time in common period is set as coordinating phase respectively, by other green lights
Time is set as red time and is solved, it may be assumed that
In formula, ΔinFor red time rate in the case of the n of the crossing i, including positive red time rateWith reversed red time
Rate For based on the red light duration in the step S3 determining crossing i common period C；C is common period duration；δinFor i
The time rate of forward and reverse red light central instant in the case of the n of crossing；For in the positive red light in the case of the n of the crossing i
The heart moment；For reversed red light central instant similar in the case of the n of the crossing i.
9. direction as described in any one in claim 1-5 of coordinating repeats the Trunk Road Coordination optimization method let pass, it is characterised in that:
In step S4, for the crossing in common period when number of passing through N >=2, certain section of long green light time in common period is set as respectively
Coordinate phase condition, establishes outlet situation parameter index table, including crossing number, coordination direction, situation serial number, positive negative side
To, common period duration, coordinate moment section, positive red time rate, reversed red time rate, forward and reverse red light central instant
Time rate.
10. direction as described in any one in claim 1-5 of coordinating repeats the Trunk Road Coordination optimization method let pass, feature exists
In: step S5 specifically,
S51, forward and reverse speed according to setting, solve forward and reverse journey time, it may be assumed that
In formula, LiFor the crossing i to the distance at next crossing, viFor forward and reverse car speed, TiIt is positive the reverse stroke time；
In S52, the parameter values incoming trunk Coordination Model for solving forward and reverse formation time of step S51 and step S4, follow
Ring solves bandwidth and phase difference between outlet, wherein the number recycled is number of passing through N in the common period of forward and reverse coordination direction；
S53, the solution that certain section of long green light time in each common period is set as coordinating phase is summarized, and to objective function maximum
Crossing between bandwidth and phase difference carry out ranking, select optimal solution as Trunk Road Coordination scheme.
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