CN104485005B - Crossing multi-line public transport vehicle override requests conflict coordination control method - Google Patents

Abstract

The invention discloses a kind of crossing multi-line public transport vehicle override requests conflict coordination control method, for the crossing that there is the conflict of multi-line public transport vehicle override requests, consider the factors such as vehicle travel time delays, preference strategy and category of roads, establish real-time multi-line override requests conflict coordination control strategy.When the benefit that only journey time of public transit vehicle is incured loss through delay and exceeded certain threshold value, override requests meets restrictive condition and preferentially brings is higher than its delay caused, it is preferential that public transit vehicle just sends out request signal, when multi-line override requests occurs, utilize preferential proficiency assessment model that the override requests of conflict is ranked up, give the circuit right-of-way that preferential level is the highest.Solve the unjustness of original multi-line override requests contention resolution on the one hand；On the other hand, to relate to parameter less and be all readily available for the inventive method, it is not necessary to complicated algorithm and optimization process etc., practical, and urban mass-transit system efficiency of operation can be greatly improved.

Description

Crossing multi-line public transport vehicle override requests conflict coordination control method

Technical field

The present invention relates to and the invention belongs to traffic administration and control field, particularly relate to a kind of crossing multi-line public transport vehicle override requests conflict coordination control method.

Background technology

The waiting time of crossing is the key component that in bus operation process, journey time is incured loss through delay.Therefore, if reducing the public transit vehicle waiting time in crossing, then the service quality of bus, will be greatly improved including journey time, on schedule reliability etc..Bus signals priority system makes public transit vehicle pass through at bus priority at intersection, thus it is acknowledged as the effective measures reducing public transit vehicle intersection delay always.

Existing public transit vehicle method for controlling priority has focused largely on one-way traffic or only studies several public bus networks, differs bigger with practical situation.If there being a plurality of circuit to run in a plurality of directions, existing result of study not only can not guide public transport operation well, reduce bus delay, also likely crossing's bus can be caused to incur loss through delay increase because of preferential adjustment improperly, thus reducing the efficiency of service of whole public transportation system.Additionally, for main branch line crossing, existing method for controlling bus priority tends to adopt " First Come First Served " strategy and the current strategy of trunk roads orientation preferentially, the former does not look after the big flow in trunk roads direction, and the latter have ignored the cumulative delay situation being also possible to exceed trunk roads direction public transit vehicle of delay in branch road direction.Obviously, both strategies all damage fairness.

Therefore, existing method for controlling bus priority can not solve well because public transit vehicle waits the problem that the journey time brought is incured loss through delay in multi-line crossing.

Summary of the invention

In view of this, in order to solve because public transit vehicle waits the problem that the journey time brought is incured loss through delay in multi-line crossing, the present invention provide a kind of crossing multi-line public transport vehicle override requests conflict coordination control method can be greatly improved crossing's multi-line public transport vehicle by efficiency, and improve the service quality of whole public transit system.

Crossing provided by the invention public transit vehicle method for controlling priority, comprises the following steps:

1) travel time detector and traffic flow detector are laid；

2) utilize described step 1) in the data that detect, calculate Travel Time for Public Transport Vehicles and incur loss through delay the window time of advent of TTD, public transit vehiclePublic transit vehicle pass through time windowIt is that public transit vehicle arrives the actual time of stroke detector and the difference of theoretical time, the window time of advent of described public transit vehicle that the journey time of described public transit vehicle incurs loss through delay TTDLower limitArrive the time of stop line, the upper limit with maximal rate for busFor bus with minimum speed arrive stop line time, described public transit vehicle pass through time windowLower limitMaximum red light early break time, the upper limit for the current phase place in crossingThe maximum green extension of phase place residing for bus.

3) according to described Travel Time for Public Transport Vehicles incur loss through delay TTD, described public transit vehicle pass through time windowWhether request signal is preferential to judge public transit vehicle with the relation of green light deadline of bus place phase place, if request, enters step 4)；

4) determine the kind of override requests application preference strategy according to the green light initial time of public transit vehicle arrival stop line time and bus place phase place and the relation of deadline, enter step 5)；

5) judge whether the precession time of described preference strategy meets minimum green time and the restriction of maximum precession time, satisfied then enter step 6)；

6) judge whether override requests has preferential benefit, be, produce new override requests, enter step 7)；

7) control centre judges whether current period exists override requests, if being absent from, then performs described step 6) the middle new override requests produced, enter step 9), if existing, then enter step 8)；

8) control centre contrasts the time that produces of new override requests and the execution time of the override requests of current period existence, determines in both execution according to comparing result, enters step 9)；

9) public transit vehicle being performed override requests is carried out speed regulation.

In order to take into full account the traffic conditions of crossing, step 1) in the paving mode of detector be:

Trunk roads are all laid on all tracks flow detector, on public transportation lane, only lays travel time detector, and all tracks of branch road will travel time detector and flow detector；

Stroke detector is laid in the upstream of distance stop line certain distance；

Flow detector is laid in the upstream of distance stroke detector certain distance.

In order to reduce override requests conflict, step 3) in determine whether preferential the concretely comprising the following steps of request signal:

If described bus journey time is incured loss through delay, TTD is only small makes bus can pass through crossing deadline at described green light, then request signal is not preferential；

Make bus exceed described green light deadline the time of advent if the journey time of described bus incurs loss through delay TTD, but time window can be passed through at described public transit vehicleBy crossing in scope, then request signal is preferential；

If what the journey time of described public transit vehicle incured loss through delay that TTD makes bus time of advent beyond described public transit vehicle passes through time windowScope, then request signal is not preferential.

In order to reduce the priority acccess control impact on other phase places, step 4) in preference strategy include red light early disconnected strategy and green light and extend, it is determined that concretely comprising the following steps of preference strategy:

If the i-th phase public transit vehicle arrives the time of stop line in the i-th-1 phase red light break time allowed band the most very early in the morning, then apply for the i-th-1 phase red light early disconnected strategy；

If the i-th phase public transit vehicle arrives the time of stop line in the i-th phase green light maximum extension allowed band, then apply for that the green light of the i-th phase extends strategy.

Step 5) described in minimum green time to meet pedestrains safety and cross the needs in street, described maximum precession time (green extension or lamp early break time) meets and does not cause non-preferential phase place the restriction of oversaturated condition occur.

In order to reduce the override requests impact on other phase places, step 6 further) in preferential benefit be:

The time TS that override requests is saved after performing is greater than the delay TD brought after override requests performs to non-preferential phase place vehicle.

In order to process override requests conflict, step 8 better) concretely comprise the following steps:

If having override requests in control centre's current period, and the generation time of new override requests performs the time started less than existing override requests, the priority level of the override requests in the new override requests of the preferential proficiency assessment model judgement generation then proposed according to the present invention and current period, the override requests that execution priority is not high, and assessment models considers the factor that trunk roads flow is relatively big, vehicle is more simultaneously, concrete formula is；

$P(i,m)=\underset{k=1}{\overset{k=n}{\mathrm{\Σ}}}\mathrm{TTD}(i,k)\·\mathrm{RH}(i,k)\·\mathrm{PS}(i,k)$

TTD (i, k)=T_current(i,k)-T_schedule(i,k)

RH (i, k)=1+ α δ (i, k)

PS (i, k)=1+ β γ (i, k)

Wherein, (i m) applies for the preferential level of all public transit vehicles of preference strategy m to P in the i-th phase place；

K the i-th phase place is applied for the public transit vehicle of preference strategy m；

N the i-th phase place is applied for the summation of the public transit vehicle of preference strategy m；

α preference strategy weight coefficient；

β category of roads weight coefficient；

If there being override requests in control centre's current period, and time started of performing more than existing override requests generation time of new override requests less than the end time, then refusal performs new override requests；

If there being override requests in control centre's current period, and the generation time of new override requests performs the end time more than existing override requests, then perform new override requests.

In order to ensure preferential smooth enforcement, step 9) the concretely comprising the following steps of medium velocity regulation and control:

If described public transit vehicle arrive stop line the time of advent window lower limit at described public transit vehicle by within the scope of time window, then the travel speed of public transit vehicle is maximum travelling speed；

If described public transit vehicle arrive stop line the time of advent window the upper limit at described public transit vehicle by within the scope of time window, then the travel speed v of public transit vehicle is:

$v=\frac{L}{W_p^{\mathrm{sta}}+\mathrm{nC}-T_0}$

In formula,

The upper limit by time window of public transit vehicle；

C Cycle Length, s；

The phase place number in mono-cycle of n；

L detection zone length of field, m；

v_maxThe maximum speed of operation of public transit vehicle, m/s；

T₀Detect the region terminal time to stop line, s；

v_minThe minimum speed of operation of public transit vehicle, m/s；

Except other situations of both the above situation, public transit vehicle keeps original speeds.

Compared with prior art, the inventive method has the advantage that

The present invention adopts γ (i, k) improve green light and extend the priority of strategy, the minimum service quality that both improve public transit vehicle of change to original periodic phase, is also minimized the adverse effect that other modes are caused, is favorably improved the benefit of whole traffic system.

The present invention proposes override requests performance evaluation, only the saving time is allowed to be issued to Signal control Center more than the override requests of its delay brought, ensure that the benefit of each override requests sent so on the one hand, also reduce the interference preferentially non-preferential phase place brought on the other hand, thus improve the traffic efficiency that signalized intersections is overall.

The present invention is in order to adopt δ (i, k) problem solving multi-line request collision under the premise of the main branch line fairness of priority level level assurance is regulated and controled, decrease interference, the many public transit vehicles of multi-line are made to pass through crossing in order, reduce the public transit vehicle delay in crossing, improve the service level of whole public transit system.

The parameter that the present invention needs is less, is obtained with by travel time detector and flow detector, and it is relatively simple to calculate process, and request signal can quickly be made a response by control centre, improves preferential coordinating efficiency.

Accompanying drawing explanation

Fig. 1 is the overview flow chart of a kind of crossing multi-line public transport vehicle override requests conflict coordination control method；

Schematic diagram laid by the detector that Fig. 2 is a kind of crossing multi-line public transport vehicle override requests conflict coordination control method；

Fig. 3 is the time-space distribution graph of the public transit vehicle theoretical driving trace under stroke time delays affects and actual travel track；

Fig. 4 is benefit and the delay schematic diagram that green light extends that strategy brings；

Fig. 5 is the red light benefit that early disconnected strategy brings and incurs loss through delay schematic diagram；

Fig. 6 is the schematic diagram alleviating the conflict of many override requests.

Detailed description of the invention

Below in conjunction with embodiment, the present invention is further described.

Below as the flow process in Fig. 1, the detailed description of the invention of the inventive method is further described.

As in figure 2 it is shown, trunk roads are provided with public transportation lane, branch road is not provided with public transportation lane.Trunk roads will be laid on all tracks flow detector, on public transportation lane, only lay travel time detector；And all tracks of branch road will travel time detector and flow detector.

Flow detector is arranged on 50m place before stop line, the flow in detection crossing inlet road, is used for calculating phase place saturation, Minimum Green Time, maximum precession time etc..

Before entrance driveway stop line, 80m place lays travel time detector, the arrival of detection vehicle and the journey time of bus, is designated as T_current。

The data detected according to detector carry out the calculating of relevant parameter:

(1) journey time calculating public transit vehicle incurs loss through delay TTD, as it is shown on figure 3, journey time incurs loss through delay TTD causes that public transit vehicle actual travel track departs from theory locus, so that bus arrives the stop line moment is later than theoretical time, its expression formula is:

TTD=T_current-T_schedule(1)

In formula, T_schedulePublic transit vehicle arrives theoretical journey time during travel time detector.

(2) the bus window time of advent is calculatedThe actual motion track of public transit vehicle can be subject to the restriction of vehicle maximum travelling speed and minimum travel speed and be distributed in the scope of the window time of advent.The time of advent, the expression formula of window was:

$W_a^{\mathrm{sta}}=\frac{L}{v_{\max }}+T_0---\left(2\right)$

$W_a^{\mathrm{end}}=\frac{L}{v_{\min }}+T_0---\left(3\right)$

In formula, L detection zone length of field, m；

v_maxThe maximum speed of operation of public transit vehicle, m/s；

T₀Detect the region terminal time to stop line, s；

v_minThe minimum speed of operation of public transit vehicle, m/s.

(3) calculate bus and pass through time windowTo be subject to the impact of initial signal timing dial, maximum green extension and maximum red light break time morning by time window, its expression formula is:

$W_p^{\mathrm{sta}}=\underset{k=1}{\overset{i-1}{\mathrm{\Σ}}}{G}_k-t_{i,\mathrm{RT}}^{\max },i=\mathrm{2,3},...,n---\left(4\right)$

$W_p^{\mathrm{end}}=\underset{k=1}{\overset{i}{\mathrm{\Σ}}}{G}_k+t_{i,\mathrm{GE}}^{\max },i=\mathrm{2,3},...,n---\left(5\right)$

In formula, G_kKth phase phase place initial green light time, unit is s；

I-th phase place maximum green extension, unit is s；

The i-th maximum red light of phase place early break time, unit is s

The phase place number in mono-cycle of n.

Judge whether preferential the concretely comprising the following steps of request signal:

If journey time that the actual wheelpath deviation theory track of bus causes is incured loss through delay only small, bus now can by crossing before green light deadline, and request signal is not preferential；

Make to have exceeded green time scope its time of advent if the journey time of bus is incured loss through delay, but still can pass through time windowBy crossing in scope, now request signal is preferential

If the journey time of public transit vehicle is incured loss through delay excessive, its time of advent has exceeded passes through time windowScope, now without preferentially.

The override requests strategy commonly used includes green light prolongation, red light early disconnected, phase place and inserts, it is contemplated that the tactful impact on other phase places of phase place insertion is relatively big, can cause bigger delay.Therefore, the present invention selects red light early disconnected and green light two preference strategies of prolongation.Specifically comprise the following steps that

If the time of advent of the bus that phase place i is corresponding existsIn scope, application red light is disconnected strategy early, its precession time $t_{i,\mathrm{RT}}=\underset{k=1}{\overset{i-1}{\mathrm{\Σ}}}{G}_k-(L/v+T_0);$

If the time of advent of the bus that phase place i is corresponding existsIn scope, application green light extends strategy, corresponding precession time $t_{i,\mathrm{GE}}=(L/v+T_0)-\underset{k=1}{\overset{i}{\mathrm{\Σ}}}{G}_k;$

In formula, t_i,GEThe green extension of the i-th phase place, unit is s；

t_i,RTThe red light of the i-th phase place is the break time early, and unit is s

The speed of service of v public transit vehicle, unit is m/s；Other parameters ibid describe.

After determining preference strategy, calculate specifically comprising the following steps that of precession time restrictive condition

(1) minimum green time is calculated

Minimum green time to ensure that pedestrian can cross safely street on the one hand, also to guarantee that supersaturation situation will occur in this phase place on the other hand, and therefore, the computing formula of minimum green time is:

$G_i^{\min }=\max \{G_{i,\mathrm{ped}}^{\min },G_{i,\mathrm{sat}}^{\min }---\left(6\right)$

In formula,Pedestrains safety corresponding to the i-th phase place crosses the minimum green time needed for street, and its expression formula is

$G_{i,\mathrm{ped}}^{\min }=7+\frac{l_p}{v_p}-I---\left(7\right)$

I-th phase place occurs without the minimum green time needed for supersaturation situation, and its expression formula is

$G_{i,\mathrm{sat}}^{\min }=\frac{q_i}{Q_i{\mathrm{\η}}_i^{\max }}C---\left(8\right)$

In formula, l_pCrossing effective length, m；

v_pPedestrian crossing speed, m/s；

I crossing copper sulfate basic, s；

q_iTraffic flow when flow rate corresponding to the i-th phase place is maximum, veh/h；

C Cycle Length, s；

Q_iThe saturation volume rate that i-th phase place is corresponding, veh/h；

The maximum saturation that i-th phase place is corresponding, %.

(2) maximum precession time is calculatedNamely maximum green light extendsOr the red light early break time

Maximum green extension to guarantee that non-preferential phase place does not have supersaturation, and its expression formula is:

$G_i-t_{i,\mathrm{pri}}^{\max }\≥G_i^{\min }---\left(9\right)$

$\frac{G_i}{G_i-t_{i,\mathrm{pri}}^{\max }}\≤\frac{{\mathrm{\η}}_i^{\max }}{{\mathrm{\η}}_i}---\left(10\right)$

In formula, G_iThe green time of the i-th phase place, unit is s；

The minimum green time of the i-th phase place, unit is s；

η_iThe saturation that i-th phase place is corresponding, %；

The maximum allowable precession time that i-th phase place is corresponding, extends if preference strategy is green light, thenIf it is early disconnected that preference strategy is red light, thenOther parameters are ibid.

As shown in Figure 4 and Figure 5, if maximum precession time is more than precession time, determines whether preferential benefit, specifically comprise the following steps that

(1) the red light benefit that early broken belt comes and delay, the time TS that benefit therein is saved after referring to preferential execution are calculated_RT, incur loss through delay the delay TD brought after refer to exactly preferential performs to non-preferential phase place vehicle_RT, concrete expression formula is

${\mathrm{TD}}_{\mathrm{RT}}=\frac{q_{i-1}^{\mathrm{arr}}\·q_{i-1}^{\mathrm{dis}}}{2(q_{i-1}^{\mathrm{dis}}-q_{i-1}^{\mathrm{arr}})}(2\·G_{i-1}\·t_{i,\mathrm{RT}}+t_{i,\mathrm{RT}}^2)---\left(11\right)$

${\mathrm{TS}}_{\mathrm{RT}}=\frac{q_i^{\mathrm{arr}}\·q_i^{\mathrm{dis}}}{2(q_i^{\mathrm{dis}}-q_i^{\mathrm{arr}})}(2\·G_{i-1}\·t_{i,\mathrm{RT}}-t_{i,\mathrm{RT}}^2)---\left(12\right)$

(2) calculating red light and extend the benefit and delay brought, expression is

${\mathrm{TD}}_{\mathrm{GE}}=\frac{q_{i+1}^{\mathrm{arr}}\·q_{i+1}^{\mathrm{dis}}}{2(q_{i+1}^{\mathrm{dis}}-q_{i+1}^{\mathrm{arr}})}(2\·G_{i+1}\·t_{i,\mathrm{GE}}+t_{i,\mathrm{GE}}^2)---\left(13\right)$

${\mathrm{TS}}_{\mathrm{GE}}=\frac{q_i^{\mathrm{arr}}\·q_i^{\mathrm{dis}}}{2(q_i^{\mathrm{dis}}-q_i^{\mathrm{arr}})}(2\·G_{i+1}\·t_{i,\mathrm{GE}}-t_{i,\mathrm{GE}}^2)---\left(14\right)$

In two formulas,The arrival rate of the vehicle of the i-th-1 phase place, veh/h；

The dissipation rate of the vehicle of the i-th-1 phase place, veh/h；

The arrival rate of the vehicle of the i-th phase place, veh/h；

The dissipation rate of the vehicle of the i-th phase place, veh/h.

When the benefit of signal priority is more than its delay brought, produce new override requests.Now, control centre needs to judge whether there is override requests in current period, if it does not exist, then perform new override requests；If it is present first determine whether the execution time of existing override requests and the relation producing the time of new override requests, as shown in Figure 6, concretely comprise the following steps:

If having override requests in control centre's current period, and the generation time of new override requests performs the time started less than existing override requests, the priority level of the override requests in the new override requests of the preferential proficiency assessment model judgement generation then proposed according to the present invention and current period, the override requests that execution priority is not high.And assessment models considers the factor that trunk roads flow is relatively big, vehicle is more simultaneously, particularly as follows:

(1), compared with early breaking with red light, adopt green light only initial signal time distributing conception need to do less adjustment when extending strategy and just can meet requirement.So, under square one, prioritizing selection green light extends strategy, therefore an expression formula RH more than 1 is multiplied by the request for the public transit vehicle of application signal green light prolongation preference strategy.

(2) considering that on trunk roads, flow is relatively big, public bus network and vehicle are more, and therefore, an expression formula PS more than 1 is multiplied by the public traffic in priority request on trunk roads.

(3) the preferential proficiency assessment model of the many override requests of the many public transit vehicles of multi-line is as follows:

$P(i,m)=\underset{k=1}{\overset{k=n}{\mathrm{\Σ}}}\mathrm{TTD}(i,k)\·\mathrm{RH}(i,k)\·\mathrm{PS}(i,k)---\left(15\right)$

TTD (i, k)=T_current(i,k)-T_schedule(i,k)(16)

RH (i, k)=1+ α δ (i, k) (17)

PS (i, k)=1+ β γ (i, k) (18)

Wherein, (i m) applies for the preferential level of all public transit vehicles of preference strategy m to P in the i-th phase place；

K the i-th phase place is applied for the public transit vehicle of preference strategy m；

N the i-th phase place is applied for the summation of the public transit vehicle of preference strategy m；

α preference strategy weight coefficient；

β category of roads weight coefficient；

(4) judge the preferential level sending multiple priority requisition according to preferential proficiency assessment model, give the high public bus network of preferential level and public transit vehicle with right-of-way, this addresses the problem the collision problem of multiple override requests.

If there being override requests in control centre's current period, and time started of performing more than existing override requests generation time of new override requests less than the end time, then refusal performs new override requests；

If there being override requests in control centre's current period, and the generation time of new override requests performs the end time more than existing override requests, then perform new override requests.

Finally, the public transit vehicle that the override requests being performed is corresponding is carried out speed regulation, specifically comprises the following steps that

If public transit vehicle the time of advent window lower limitPassing through time windowIn scope, now the travel speed of public transit vehicle should be maximum travelling speed.

If public transit vehicle the time of advent window upper limit Waend passing through time windowIn scope,Being regarded as the upper limit by time window, now the travel speed of public transit vehicle should be

$v=\frac{L}{W_p^{\mathrm{sta}}+\mathrm{nC}-T_0}---\left(19\right)$

Otherwise, public transit vehicle will keep original speeds.

This ensure that preferential smooth enforcement, the inventive method achieves the coordinated operation of crossing's multi-line many public transit vehicles override requests conflict, improves the traffic efficiency of crossing.

The preferred embodiment of the present invention described in detail above; but, the present invention is not limited to the detail in above-mentioned embodiment, in the technology concept of the present invention; technical scheme can being carried out multiple equivalents, these equivalents belong to protection scope of the present invention.

Claims (8)

1. a crossing multi-line public transport vehicle override requests conflict coordination control method, it is characterised in that comprise the following steps:

1) travel time detector and traffic flow detector are laid；

2) utilize described step 1) in the data that detect, calculate Travel Time for Public Transport Vehicles and incur loss through delay the window time of advent of TTD, public transit vehiclePublic transit vehicle pass through time windowIt is that public transit vehicle arrives the actual time of travel time detector and the difference of theoretical time, the window time of advent of described public transit vehicle that described Travel Time for Public Transport Vehicles incurs loss through delay TTDLower limitArrive the time of stop line, the upper limit with maximal rate for busFor bus with minimum speed arrive stop line time, described public transit vehicle pass through time windowLower limitMaximum red light early break time, the upper limit for the current phase place in crossingThe maximum green extension of phase place residing for bus；

3) according to described Travel Time for Public Transport Vehicles incur loss through delay TTD, described public transit vehicle pass through time windowWhether request signal is preferential to judge public transit vehicle with the relation of green light deadline of bus place phase place, if request, enters step 4)；

4) determine the kind of override requests application preference strategy according to the green light initial time of public transit vehicle arrival stop line time and bus place phase place and the relation of deadline, enter step 5)；

5) judge whether the precession time of described preference strategy meets minimum green time and the restriction of maximum precession time, satisfied then enter step 6)；

6) judge whether override requests has preferential benefit, be, produce new override requests, enter step 7)；

7) control centre judges whether current period exists override requests, if being absent from, then performs described step 6) the middle new override requests produced, enter step 9), if existing, then enter step 8)；

8) control centre contrasts the time that produces of new override requests and the execution time of the override requests of current period existence, if the time that produces of new override requests performs the time started less than the override requests in current period, preferential proficiency assessment model is then utilized to judge the priority level of the override requests in new override requests and current period, the override requests that execution priority is not high, enters step 9)；

9) public transit vehicle being performed override requests is carried out speed regulation.

2. the crossing multi-line public transport vehicle override requests conflict coordination control method described in claim 1, it is characterised in that described step 1) in the paving mode of detector be:

Trunk roads are all laid on all tracks traffic flow detector, on public transportation lane, only lays travel time detector, and travel time detector and traffic flow detector will be laid in all tracks of branch road；

Travel time detector is laid in the upstream of distance stop line certain distance；

Traffic flow Loop detector layout is in the upstream of distance travel time detector certain distance.

3. the crossing multi-line public transport vehicle override requests conflict coordination control method described in claim 1, it is characterised in that described step 3) in determine whether preferential the concretely comprising the following steps of request signal:

If described Travel Time for Public Transport Vehicles is incured loss through delay, TTD is only small makes bus can pass through crossing deadline at described green light, then request signal is not preferential；

Make bus exceed described green light deadline the time of advent if described Travel Time for Public Transport Vehicles incurs loss through delay TTD, but time window can be passed through at described public transit vehicleBy crossing in scope, then request signal is preferential；

If what described Travel Time for Public Transport Vehicles incured loss through delay that TTD makes bus time of advent beyond described public transit vehicle passes through time windowScope, then request signal is not preferential.

4. the crossing multi-line public transport vehicle override requests conflict coordination control method described in claim 1, it is characterised in that described step 4) in preference strategy include red light early disconnected strategy and green light and extend, it is determined that concretely comprising the following steps of preference strategy:

If the i-th phase place public transit vehicle arrives the time of stop line in the i-th-1 phase place red light break time allowed band the most very early in the morning, then apply for the i-th-1 phase place red light early disconnected strategy；

If the i-th phase place public transit vehicle arrives the time of stop line in the i-th phase place green light maximum extension allowed band, then apply for that the green light of the i-th phase place extends strategy.

5. the crossing multi-line public transport vehicle override requests conflict coordination control method described in claim 1, it is characterized in that, described step 5) in minimum green time to meet pedestrains safety and cross street requirement, described maximum precession time to meet and not cause non-preferential phase place the restriction of oversaturated condition occur.

6. the crossing multi-line public transport vehicle override requests conflict coordination control method described in claim 1, it is characterized in that, described step 6) in preferential benefit refer to that the time that override requests is saved after performing is greater than after override requests performs to the delay that brings of non-preferential phase place vehicle.

7. the crossing multi-line public transport vehicle override requests conflict coordination control method described in claim 1, it is characterised in that the concrete formula of described preferential proficiency assessment model is as follows:

$P(i,m)=\underset{k=1}{\overset{k=n}{\Σ}}TTD(i,k)\·RH(i,k)\·PS(i,k)$ TTD (i, k)=T_current(i,k)-T_schedule(i,k)

RH (i, k)=1+ α δ (i, k)

PS (i, k)=1+ β γ (i, k)

Wherein, (i m) applies for the preferential level of all public transit vehicles of preference strategy m to P in the i-th phase place；

K the i-th phase place is applied for the public transit vehicle of preference strategy m；

N the i-th phase place is applied for the summation of the public transit vehicle of preference strategy m；

α preference strategy weight coefficient；

β category of roads weight coefficient；

Described step 8) further comprising the steps of:

If the time that produces of described new override requests, then refusal performed new override requests more than the time started of the override requests execution in described current period and less than performing the end time；

If the time that produces of described new override requests performs the end time more than the override requests in described current period, then perform new override requests.

8. the crossing multi-line public transport vehicle override requests conflict coordination control method described in claim 1, it is characterised in that described step 9) medium velocity regulation and control concretely comprise the following steps:

If described public transit vehicle arrive stop line the time of advent window lower limit at described public transit vehicle by within the scope of time window, then the travel speed of public transit vehicle is maximum travelling speed；

If described public transit vehicle arrive stop line the time of advent window the upper limit at described public transit vehicle by within the scope of time window, then the travel speed v of public transit vehicle is:

$v=\frac{L}{W_p^{sta}+nC-T_0}$

In formula,

The upper limit by time window of public transit vehicle；

C Cycle Length, s；

The phase place number in mono-cycle of n；

L detection zone length of field, m；

T₀Detect the region terminal time to stop line, s；

Otherwise, public transit vehicle keeps original speeds.