CN109584546A - It is a kind of quickly-regular public traffic shares lane and dispatches a car the determination method of flow threshold - Google Patents
It is a kind of quickly-regular public traffic shares lane and dispatches a car the determination method of flow threshold Download PDFInfo
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- CN109584546A CN109584546A CN201810721982.1A CN201810721982A CN109584546A CN 109584546 A CN109584546 A CN 109584546A CN 201810721982 A CN201810721982 A CN 201810721982A CN 109584546 A CN109584546 A CN 109584546A
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
- G08G1/0125—Traffic data processing
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/065—Traffic control systems for road vehicles by counting the vehicles in a section of the road or in a parking area, i.e. comparing incoming count with outgoing count
Abstract
Lane is shared the invention discloses a kind of routine-bus rapid transit to dispatch a car the determination method of flow threshold, this method is first using bus rapid transit and the conllinear road of regular public traffic as research object, Con trolling index by the amount of dispatching a car of the regular public traffic under specific bus rapid transit departure frequency as threshold value, and then study the constraint condition that bus rapid transit special lane shares threshold value, then pass through the analysis to a few class key indexes, runing time constraint condition is proposed respectively, website is lined up probabilistic constraints, section operational efficiency is as three classes constraint condition, finally by the threshold range calculated under different transportation conditions, induction and conclusion goes out the determination method that routine-bus rapid transit shares lane threshold condition.The present invention is directed to explore the quantification condition of the shared setting of routine-bus rapid transit dedicated Lanes, optimization method support can be provided for the shared setting of special lane, on the basis of ensureing special lane public transport operation efficiency and section overall operation benefit, the advantage of existing road traffic resource is played to the maximum extent.
Description
Technical field
The present invention relates to Urban Traffic Plannings and management domain, share lane more particularly to a kind of quick-regular public traffic
It dispatches a car the determination method of flow threshold.
Background technique
With the rapid development of our country's economy, urbanization, motorization process increasingly accelerate, the small vapour of China's most cities
The gap of vehicle growth rate and the growth rate of road traffic facility is growing, and traffic problems become increasingly conspicuous.For major part
City is only developed public transport, and the policy of public traffic in priority is carried out, and public transportation construction is become to the main force of urban transportation,
The traffic problems such as the congestion of urban transportation appearance can be alleviated from the root.
The advantages of fast public traffic system is a kind of novel public transport form, has both regular public traffic and rail traffic, fortune
Amount is big, average travelling speed is high, flexibility is good, environmental pollution is small, and construction cost relative moderate, is increasingly widely applied.
In addition, backbone of the bus rapid transit as urban transportation, generally must all be aided with regular public traffic as supplement.Regular public traffic and quickly
Public transport is simultaneously stored in urban public tranlport system, and there is a large amount of conllinear situations, and on the other hand, independent running space is
Guarantee that the basic premise of bus rapid transit efficient operation, bus rapid transit route are generally owned by the dedicated Lanes of independent right of way, due to
Departure frequency is lower, therefore the independent usual utilization rate of section bus rapid transit special lane is lower, and there is the biggish wastings of resources.
It therefore, can be in bus rapid transit and regular public traffic under the premise of guaranteeing bus rapid transit operation not by larger impact
On conllinear road, bus rapid transit special lane is shared, is supplied to ground routine public transport use.On the one hand it can be improved fast
The utilization efficiency of fast public transportation lane, optimizes the configuration of path resource, and the operational efficiency of common public transport on the other hand can be improved,
Reduce delay.Currently there is relevant bus rapid transit special lane to carry out shared similar practice, i.e., so-called group with regular public traffic
The bus rapid transit line form on zygonema road is substantially the auxiliary using the branch line of similar regular public traffic as main line.But these
There is no the setting standards for considering foundation quantification to be configured for practice, if the ground routine bus departure of shared dedicated Lanes
Measure it is excessive, will seriously affect integrity service level.Therefore, for the lower limit of the shared amount of dispatching a car of quickly-regular public traffic special lane
Quantitatively judge with the upper limit and have important practical significance.
Summary of the invention
In order to solve problem above, the present invention provide it is a kind of quickly-regular public traffic shares lane and dispatches a car flow threshold really
Determine method, this method improves urban road resource to coordinate the efficient operation of bus rapid transit Yu two kinds of modes of transportation of regular public traffic
Utilization efficiency be target, using bus rapid transit and the conllinear section of regular public traffic route as research object, study special traffic under the conditions of
Bus rapid transit and regular public traffic carry out the method that the independent or shared threshold condition of special lane determines, can be dedicated for bus rapid transit
Road shares setting with regular public traffic and provides reference, for this purpose, the present invention provides a kind of shared lane hair of quick-regular public traffic
Vehicle flowrate threshold value determination method, comprising the following steps:
Step 1, obtain correlative factor parameter data: including the bus rapid transit route amount of dispatching a car, average cross mouth spacing and
Website spacing, the service time of website, social vehicle flowrate, platform form and Berth number, website public transport arrival rule, conllinear section
The number of track-lines of length, road, intersection split and correlation factor data；
Step 2, operational efficiency constraint condition in section judges, enabling the regular public traffic route amount of dispatching a car is 0/h, solves before sharing
Journey time per capita afterwards judges whether section constraint condition is true, if invalid, regular public traffic is constantly turned up and dispatches a car
Amount, the regular public traffic amount of dispatching a car for finally meeting the constraint condition is the determining regular public traffic amount of the dispatching a car lower limit constraint of the condition
Value；
Step 3, it is lined up probabilistic constraints judgement, sets the regular public traffic amount of dispatching a car first as a higher initial value,
200/h is taken, then according to the arrival rule of website public transport and website berth form, is calculated using corresponding model and is lined up probability,
Judge whether to meet queuing Probability Condition, if do not met, turns down the regular public traffic amount of dispatching a car, until eligible, then
The upper limit value for constantly meeting constraint condition after adjustment is the amount of the dispatching a car upper limit binding occurrence for the regular public traffic that the condition determines；
Step 4, runing time constraint condition judges, if the regular public traffic amount of dispatching a car is higher 200/h of initial value, according to
Section speed flow models and intersection delay model calculate the time that section and intersection are spent, and are reached according to website public transport
Analysis model, which calculates, is lined up delay, judges whether to meet total run time condition, if do not met, turns down regular public traffic and dispatch a car
Amount, until meeting, then the regular public traffic amount of dispatching a car when meeting is the upper limit value that runing time constraint condition limits；
Step 5, threshold value section determines it as the lower limit of threshold value according to the regular public traffic amount of dispatching a car that step 2 determines
Binding occurrence；The regular public traffic amount of dispatching a car determined by step 3 and step 4 is compared, selects wherein that the lesser upper limit as threshold value is about
Beam value, the then value range of available threshold value.
As a further improvement of that present invention, road physical factor number in correlation factor data needed for threshold determination in step 1
According to including: conllinear segment length, number of track-lines, intersection spacing, website spacing, Berth number；Traffic control factor data includes: to intersect
Mouth split, the bus rapid transit amount of dispatching a car；Traffic behavior factor data include: peak period society vehicle flowrate, the station services time,
Website public transport reaches rule；Threshold value discriminant criterion includes: efficiency comes first coefficient and queuing probability high limit of tolerance value.
As a further improvement of that present invention, the road shared using journey time per capita as the special lane of index in the step 2
Section operational efficiency condition are as follows:
t′avg< ξ tavg
In formula: ξ is efficiency comes first coefficient, t 'avgBe it is shared after journey time per capita, tavgWhen being shared preceding stroke per capita
Between；
Journey time calculation formula is respectively as follows: shared front and back section per capita
In formula: qBRTFor bus rapid transit flow (pcu/h)；qcgFor regular public traffic flow (pcu/h)；qshFor public vehicles stream
It measures (pcu/h)；tzIt is vehicle travel time (pcu/h) on shared preceding special lane；thxIt is vehicle travel on shared preceding social lane
Time (pcu/h)；pBRTFor bus rapid transit carrying number (people /)；pcgFor regular public traffic carrying number (people /)； pshFor social vehicle
Carrying number (people /)；
In formula: t 'zIt is vehicle travel time (pcu/h) on shared rear special lane；t′hxIt is vehicle on shared rear social lane
Journey time (pcu/h)；Remaining symbol is the same；
Again by determining section rate pattern according to improved BPR model are as follows:
In formula: v0For free stream velocity (km/h)；Q is flow (pcu/h)；C is road passage capability (pcu/h)；
So vehicle travel time t on shared preceding special lanezWith vehicle travel time t on social lanehxIt may be expressed as:
In formula: L is shared segment length (km)；vzIt is Vehicle Speed (km/h) on shared preceding special lane；vhxIt is shared
Vehicle Speed (km/h) on preceding society lane；Remaining symbol is the same；
So sharing vehicle travel time t ' on rear special lane in formula (3)zWith vehicle travel time t ' on social lanehx
It may be expressed as:
In formula: vz' it is Vehicle Speed (km/h) on shared rear special lane；vhx' it is vehicle on shared rear social lane
Travel speed (km/h)；Remaining symbol is the same.
As a further improvement of that present invention, to be lined up constraint condition of the probability as index in the step 3 specifically:
P≤Ppermit
In formula: P is that bus rapid transit and regular public traffic are lined up probability (km)；PermitFor the queuing probabilistic upper bound allowed.It is lined up
Probability high limit of tolerance needs to choose according to concrete engineering, it is proposed that takes 10%~25%；
In above formula, the formula for being lined up the M/M/n queuing system that probability P can use waiting system calculates its index, following institute
Show:
In formula: P0For the probability of berth free time；S is the Berth number that platform is stopped in mixing；ρ is the service intensity of system；Its
In:
λ=λA+λB
In formula: λA、λBThe respectively arrival rate (/h) of bus rapid transit and regular public traffic；tA、tBRespectively bus rapid transit and
The average service time (s) of regular public traffic.λ is the arrival rate (/h) of equivalent public transport wagon flow；T is being averaged for equivalent public transport wagon flow
Service time (s)；U is the service rate (/h) of equivalent public transport wagon flow.
As a further improvement of that present invention, using website runing time as the constraint condition of index in the step 4 specifically:
In formula: L is shared segment length (km)；TgzIt is all website delay time at stop on shared rear special lane；TgjAfter shared
All intersection delay times on special lane；TglIt is shared rear special lane section runing time；tgzIt is to be put down on shared rear special lane
The single website delay time at stop；nzFor website number；njFor intersection number；tgjIt is average single intersection on shared rear special lane
The mouth delay time at stop；vglIt is the shared rear special lane section speed of service；vyFor under the fast public traffic system travelling speed of the lowest class
Limit；G is the effective green time (s) of lane group；C is signal period length (s)；X is the v/c ratio of lane group；Remaining symbol is same
Before.
It is of the invention a kind of quickly-regular public traffic shares lane and dispatches a car the determination method of flow threshold, compared with prior art, tool
Have it is following the utility model has the advantages that
The present invention is using bus rapid transit and the conllinear road of regular public traffic as research object, corresponding shared section, intersection, website
Equal multifactor impacts, establish quantitative model relevant to the amount of dispatching a car and calculation method respectively；It is based on multiplicity simultaneously, begs for
It has discussed under different physical conditions, has determined the constraint condition of the regular public traffic amount of dispatching a car bound threshold interval, instructed practical shared fortune
Row；In addition, threshold interval will will receive the influence of different factors, and this method can according to different physical conditions in practical application
Bottlenecks are found out in help, make up existing special lane share condition quantification setting method defect, for optimization design have compared with
Good supplementary function promotes the operational efficiency of road comprehensive traffic to further realize distributing rationally for road section resource.
Detailed description of the invention
Fig. 1 is flow chart of the invention；
Fig. 2 be various conventional bus departure amount section of the present invention per capita when consume schematic diagram；
Fig. 3 is that various conventional bus departure amount website of the present invention is lined up probability schematic diagram；
Fig. 4 is various conventional bus departure amount runing time of the present invention.
Specific embodiment
Present invention is further described in detail with specific embodiment with reference to the accompanying drawing:
The present invention provide it is a kind of quickly-regular public traffic shares lane and dispatches a car the determination method of flow threshold, this method is to assist
The efficient operation of bus rapid transit and two kinds of modes of transportation of regular public traffic is adjusted, the utilization efficiency for improving urban road resource is target,
Using bus rapid transit and the conllinear section of regular public traffic route as research object, bus rapid transit and regular public traffic under the conditions of special traffic are studied
The method that the independent or shared threshold condition of progress special lane determines, can share with regular public traffic for bus rapid transit special lane and set
Offer reference is provided.
With the method in the invention, in conjunction with specific example, the present invention will be further described.It is a kind of quick-conventional public
Shared lane is handed over to dispatch a car the determination method of flow threshold, comprising the following steps:
Step 1, obtain correlative factor parameter data: including the bus rapid transit route amount of dispatching a car, average cross mouth spacing and
Website spacing, the service time of website, social vehicle flowrate, platform form and Berth number, website public transport arrival rule, conllinear section
The number of track-lines of length, road, intersection split related data.
Correlation factor data needed for 1 threshold determination of table
According to investigation and requirement of engineering, determine that associated parameter data is as shown in the table in this example:
2 example related parameter values of table
Step 2, operational efficiency constraint condition in section judges, enabling the regular public traffic route amount of dispatching a car is 0/h, solves before sharing
Journey time per capita afterwards judges whether section constraint condition is true, if invalid, regular public traffic is constantly turned up and dispatches a car
Amount, the regular public traffic amount of dispatching a car for finally meeting the constraint condition is the determining regular public traffic amount of the dispatching a car lower limit constraint of the condition
Value.
The section operational efficiency condition shared using journey time per capita as the special lane of index are as follows:
t′avg< ξ tavg
In formula: ξ is efficiency comes first coefficient, t 'avgBe it is shared after journey time per capita, tavgWhen being shared preceding stroke per capita
Between.
Journey time calculation formula is respectively as follows: shared front and back section per capita
In formula: qBRTFor bus rapid transit flow (pcu/h)；qcgFor regular public traffic flow (pcu/h)；qshFor public vehicles stream
It measures (pcu/h)；tzIt is vehicle travel time (pcu/h) on shared preceding special lane；thxIt is vehicle travel on shared preceding social lane
Time (pcu/h)；pBRTFor bus rapid transit carrying number (people /)；pcgFor regular public traffic carrying number (people /)；pshFor social vehicle
Carrying number (people /).
In formula: t 'zIt is vehicle travel time (pcu/h) on shared rear special lane；t′hxIt is vehicle on shared rear social lane
Journey time (pcu/h)；Remaining symbol is the same.
Again by determining section rate pattern according to improved BPR model are as follows:
In formula: v0For free stream velocity (km/h)；Q is flow (pcu/h)；C is road passage capability (pcu/h).
So vehicle travel time t on shared preceding special lanezWith vehicle travel time t on social lanehxIt may be expressed as:
In formula: L is shared segment length (km)；vzIt is Vehicle Speed (km/h) on shared preceding special lane；vhxIt is shared
Vehicle Speed (km/h) on preceding society lane；Remaining symbol is the same.
So sharing vehicle travel time t ' on rear special lane in formula (3)zWith vehicle travel time t ' on social lanehx
It may be expressed as:
In formula: vz' it is Vehicle Speed (km/h) on shared rear special lane；vhx' it is vehicle on shared rear social lane
Travel speed (km/h)；Remaining symbol is the same.
It, can be in the hope of front and back shared under various conventional bus departure amount level according to the solution formula in above-mentioned steps 2
It is consumed when per capita.Be calculated it is shared before per capita when consumption (after efficiency comes first coefficient) and it is shared after per capita when consumption and with
The relationship of the regular public traffic amount of dispatching a car variation is as shown in Figure 2.
Observe that working as the regular public traffic amount of dispatching a car is 16/h, consumes when consumed when after sharing per capita less than before sharing per capita, therefore,
The regular public traffic amount of the dispatching a car lower limit for meeting efficiency comes first condition in section in this example is y1=16/h.
Step 3, it is lined up probabilistic constraints judgement, sets the regular public traffic amount of dispatching a car first as a higher initial value,
200/h is taken, then according to the arrival rule of website public transport and website berth form, is calculated using corresponding model and is lined up probability,
Judge whether to meet queuing Probability Condition, if do not met, turns down the regular public traffic amount of dispatching a car, until eligible, then
The upper limit value for constantly meeting constraint condition after adjustment is the amount of the dispatching a car upper limit binding occurrence for the regular public traffic that the condition determines.
It is described to be lined up constraint condition of the probability as index specifically:
P≤Ppermit
In formula: P is that bus rapid transit and regular public traffic are lined up probability (km)；PpermitFor the queuing probabilistic upper bound allowed.It is lined up
Probability high limit of tolerance needs to choose according to concrete engineering, it is proposed that takes 10%~25%.
In above formula, the formula for being lined up the M/M/n queuing system that probability P can use waiting system calculates its index, following institute
Show:
In formula: P0For the probability of berth free time；S is the Berth number that platform is stopped in mixing；ρ is the service intensity of system.
Wherein:
λ=λA+λB
In formula: λA、λBThe respectively arrival rate (/h) of bus rapid transit and regular public traffic；λA、λBRespectively bus rapid transit and
The average service time (s) of regular public traffic.λ is the arrival rate (/h) of equivalent public transport wagon flow；T is being averaged for equivalent public transport wagon flow
Service time (s)；U is the service rate (/h) of equivalent public transport wagon flow.
By the calculation formula in above-mentioned steps 3, the queuing probability in this example under various conventional bus departure amount can be calculated,
As shown in Figure 3.Due to allowing to be lined up probabilistic upper bound to be 20%, obtaining the regular public traffic amount of the dispatching a car upper limit that the condition determines is y2=56
/ h.
Step 4, runing time constraint condition judges, if the regular public traffic amount of dispatching a car is higher 200/h of initial value, according to
Section speed flow models and intersection delay model calculate the time that section and intersection are spent, and are reached according to website public transport
Analysis model, which calculates, is lined up delay, judges whether to meet total run time condition, if do not met, turns down regular public traffic and dispatch a car
Amount, until meeting, then the regular public traffic amount of dispatching a car when meeting is the upper limit value that runing time constraint condition limits.
It is described using website runing time as the constraint condition of index specifically:
In formula: L is shared segment length (km)；TgzIt is all website delay time at stop on shared rear special lane；TgjAfter shared
All intersection delay times on special lane；TglIt is shared rear special lane section runing time；tgzIt is to be put down on shared rear special lane
The single website delay time at stop；nzFor website number；njFor intersection number；tgjIt is average single intersection on shared rear special lane
The mouth delay time at stop；vglIt is the shared rear special lane section speed of service；vyFor under the fast public traffic system travelling speed of the lowest class
Limit, value 20km/h；G is the effective green time (s) of lane group；C is signal period length (s)；X is the v/c of lane group
Than；Remaining symbol is the same.
According to calculation formula in above-mentioned steps 4, it can calculate in this example that public transport is arrived at a station under various conventional bus departure amount
Average stopping time.Under the available various conventional bus departure amount of result that binding model calculates when total operation of shared segment
Between, as shown in Figure 4.
Travelling speed lower limit is 20km/h, then the section runing time that length is 10km is no more than 30min, by can in figure
To obtain the regular public traffic amount of the dispatching a car upper limit binding occurrence of runing time restrict under the corresponding travelling speed of this example as y3=72
/ h.
Step 5, threshold value section determines it as the lower limit of threshold value according to the regular public traffic amount of dispatching a car that step 2 determines
Binding occurrence；The regular public traffic amount of dispatching a car determined by step 3 and step 4 is compared, selects wherein that the lesser upper limit as threshold value is about
Beam value, the then value range of available threshold value.
In summary step may finally determine and be appropriate for introducing shared normal of bus rapid transit special lane and bus rapid transit
Advise bus departure amount S ∈ (y1,min(y2,y3))=(16, min (56,72))=(16,56), i.e., threshold interval be 16/h~
56/h.That is, carrying out the shared regular public traffic quantity model of special lane with bus rapid transit under the transportation condition of the example
It is trapped among between 16/h~56/h.
The above described is only a preferred embodiment of the present invention, being not the limit for making any other form to the present invention
System, and made any modification or equivalent variations according to the technical essence of the invention, still fall within present invention model claimed
It encloses.
Claims (5)
- A kind of determination method of flow threshold 1. shared lane of quick-regular public traffic is dispatched a car, which is characterized in that including following step It is rapid:Step 1, the data of correlative factor parameter are obtained: including the bus rapid transit route amount of dispatching a car, average cross mouth spacing and website Spacing, the service time of website, social vehicle flowrate, platform form and Berth number, the arrival rule of website public transport, conllinear segment length The number of track-lines of degree, road, intersection split and correlation factor data；Step 2, operational efficiency constraint condition in section judges, enabling the regular public traffic route amount of dispatching a car is 0/h, solves shared front and back Journey time per capita judges whether section constraint condition is true, if invalid, the regular public traffic amount of dispatching a car constantly is turned up, most The regular public traffic amount of dispatching a car for meeting the constraint condition eventually is the determining regular public traffic amount of the dispatching a car lower limit binding occurrence of the condition；Step 3, it is lined up probabilistic constraints judgement, the regular public traffic amount of dispatching a car is set first as a higher initial value, takes 200 / h, then according to the arrival rule of website public transport and website berth form, using corresponding model calculating queuing probability, judgement is It is no to meet queuing Probability Condition, if do not met, the regular public traffic amount of dispatching a car is turned down, until eligible, is then constantly adjusted The upper limit value for meeting constraint condition after whole is the amount of the dispatching a car upper limit binding occurrence for the regular public traffic that the condition determines；Step 4, runing time constraint condition judges, if the regular public traffic amount of dispatching a car is higher 200/h of initial value, according to section Speed flow models and intersection delay model calculate the time that section and intersection are spent, and are reached and are analyzed according to website public transport Model, which calculates, is lined up delay, judges whether to meet total run time condition, if do not met, turns down the regular public traffic amount of dispatching a car, Until meeting, then the regular public traffic amount of dispatching a car when meeting is the upper limit value that runing time constraint condition limits；Step 5, threshold value section determines it as the lower limit constraint of threshold value according to the regular public traffic amount of dispatching a car that step 2 determines Value；The regular public traffic amount of dispatching a car determined by step 3 and step 4 is compared, the wherein lesser upper limit binding occurrence as threshold value is selected, The then value range of available threshold value.
- The determination method of flow threshold 2. the shared lane of a kind of quick-regular public traffic according to claim 1 is dispatched a car, it is special Sign is: road physical factor data include: conllinear segment length, lane in correlation factor data needed for threshold determination in step 1 Number, intersection spacing, website spacing, Berth number；Traffic control factor data includes: that intersection split, bus rapid transit are dispatched a car Amount；Traffic behavior factor data includes: peak period society vehicle flowrate, station services time, website public transport arrival rule；Threshold value Discriminant criterion includes: efficiency comes first coefficient and queuing probability high limit of tolerance value.
- The determination method of flow threshold 3. the shared lane of a kind of quick-regular public traffic according to claim 1 is dispatched a car, it is special Sign is: the section operational efficiency condition shared using journey time per capita as the special lane of index in the step 2 are as follows:t′avg< ξ tavgIn formula: ξ is efficiency comes first coefficient, t 'avgBe it is shared after journey time per capita, tavgIt is shared preceding journey time per capita；Journey time calculation formula is respectively as follows: shared front and back section per capitaIn formula: qBRTFor bus rapid transit flow (pcu/h)；qcgFor regular public traffic flow (pcu/h)；qshFor public vehicles flow (pcu/h)；tzIt is vehicle travel time (pcu/h) on shared preceding special lane；thxWhen being vehicle travel on shared preceding social lane Between (pcu/h)；pBRTFor bus rapid transit carrying number (people /)；pcgFor regular public traffic carrying number (people /)；pshFor public vehicles Carrying number (people /)；In formula: t 'zIt is vehicle travel time (pcu/h) on shared rear special lane；t′hxIt is vehicle travel on shared rear social lane Time (pcu/h)；Remaining symbol is the same；Again by determining section rate pattern according to improved BPR model are as follows:In formula: v0For free stream velocity (km/h)；Q is flow (pcu/h)；C is road passage capability (pcu/h)；So vehicle travel time t on shared preceding special lanezWith vehicle travel time t on social lanehxIt may be expressed as:In formula: L is shared segment length (km)；vzIt is Vehicle Speed (km/h) on shared preceding special lane；vhxIt is shared preceding society Get on the bus a travel speed (km/h) in meeting lane；Remaining symbol is the same；So sharing vehicle travel time t ' on rear special lane in formula (3)zWith vehicle travel time t ' on social lanehxIt can table It is shown as:In formula: vz' it is Vehicle Speed (km/h) on shared rear special lane；vhx' it is vehicle driving on shared rear social lane Speed (km/h)；Remaining symbol is the same.
- The determination method of flow threshold 4. the shared lane of a kind of quick-regular public traffic according to claim 1 is dispatched a car, it is special Sign is: to be lined up constraint condition of the probability as index in the step 3 specifically:P≤PpermitIn formula: P is that bus rapid transit and regular public traffic are lined up probability (km)；PpermitFor the queuing probabilistic upper bound allowed.It is lined up probability High limit of tolerance needs to choose according to concrete engineering, it is proposed that takes 10%~25%；In above formula, the formula for being lined up the M/M/n queuing system that probability P can use waiting system calculates its index, as follows:In formula: P0For the probability of berth free time；S is the Berth number that platform is stopped in mixing；ρ is the service intensity of system；Wherein:λ=λA+λBIn formula: λA、λBThe respectively arrival rate (/h) of bus rapid transit and regular public traffic；tA、tBRespectively bus rapid transit and routine The average service time (s) of public transport.λ is the arrival rate (/h) of equivalent public transport wagon flow；T is the average service of equivalent public transport wagon flow Time (s)；U is the service rate (/h) of equivalent public transport wagon flow.
- The determination method of flow threshold 5. the shared lane of a kind of quick-regular public traffic according to claim 1 is dispatched a car, it is special Sign is: using website runing time as the constraint condition of index in the step 4 specifically:In formula: L is shared segment length (km)；TgzIt is all website delay time at stop on shared rear special lane；TgjIt is shared rear dedicated All intersection delay times on road；TglIt is shared rear special lane section runing time；tgzIt is average single on shared rear special lane A website delay time at stop；nzFor website number；njFor intersection number；tgjIt is that average single crossing prolongs on shared rear special lane Between mistaking；vglIt is the shared rear special lane section speed of service；vyFor the fast public traffic system travelling speed lower limit of the lowest class；g For the effective green time (s) of lane group；C is signal period length (s)；X is the v/c ratio of lane group；Remaining symbol is the same.
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| CN201810721982.1A CN109584546B (en) | 2018-07-04 | 2018-07-04 | Method for determining departure flow threshold of quick-conventional bus sharing lane |
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| CN113641727A (en) * | 2021-08-09 | 2021-11-12 | 安徽富煌科技股份有限公司 | Method for calculating transport speed of buses on different lines based on same time and space |
| CN114255586A (en) * | 2021-11-12 | 2022-03-29 | 浙江银江智慧交通工程技术研究院有限公司 | Method and system for optimizing multi-mode network traffic distribution under open strategy |
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| CN113641727A (en) * | 2021-08-09 | 2021-11-12 | 安徽富煌科技股份有限公司 | Method for calculating transport speed of buses on different lines based on same time and space |
| CN114255586A (en) * | 2021-11-12 | 2022-03-29 | 浙江银江智慧交通工程技术研究院有限公司 | Method and system for optimizing multi-mode network traffic distribution under open strategy |
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