CN106157618B - A kind of urban public transportation lane plans cloth network method - Google Patents
A kind of urban public transportation lane plans cloth network method Download PDFInfo
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Abstract
A kind of urban public transportation lane plans cloth network method, belongs to urban public transport field.The present invention influences bus trip ratio to solve the problem of that existing public transportation lane service level is low.Determine the city bus volume of the flow of passengers and public transport operation speed, establish urban public transportation lane requirements set, establish public transportation lane supply set, according to there is provided the variations of Impedance Function of Urban Streets after initial public transportation lane, the urban transportation OD amounts that Urban traffic demand is predicted are redistributed, the OD volume of traffic is calculated and redistributes the ridership and section passenger's average travel time that each section unit interval transports in rear road network, establish bus lane network connection section set, section in set R is planned to public transportation lane, then public transportation lane perforation networking.The method of the present invention, which considers public transportation lane terminus, can become the factor of bottleneck road, so as to improve the ability that bus transports passenger, increase the attraction of public transport, improve urban traffic blocking.
Description
Technical field
The invention belongs to urban public transport field, especially a kind of urban public transportation lane plans the method arranged net.
Background technology
With increasing for China's car quantity, urban highway traffic is crowded increasingly severe, and traffic congestion brings one
The traffic problems of series, road traffic accident take place frequently, increasing environmental pollution.It is to solve city road to first develop urban public transport
The effective means of road traffic congestion, bus right of way have preferentially fully demonstrated the theory for first developing public transport, and public transport is special
The setting in road makes bus enjoy road occupation priority.Therefore, public transportation lane is aobvious for solving the problems, such as Current traffic effect
It writes.The many big cities in China are all provided with public transportation lane, practice have shown that, setting public transportation lane can greatly improve public transport and go out
Row ratio, but condition is set according to current public transportation lane, in each city public transportation lane setting be all separately provided, one
As be arranged on mixed running and compare congestion and the larger section of share of public transportation, mutually disperse between public transportation lane,
It does not connect each other, does not form public transportation lane network, bus can not enjoy preferential right of way after sailing out of public transportation lane, in public affairs
It hands over special lane with mixed running road junction since the number of track-lines of private car wheeled on road is changed, often occurs
Traffic congestion, bus are low in these bottleneck road travel speeds so that bus whole process average speed reduces, public transportation lane
Improve the effect unobvious of bus running speed.Public transportation lane service level is low, influences bus trip ratio.
Invention content
The present invention influences bus trip ratio, Jin Erti to solve the problem of that existing public transportation lane service level is low
A kind of urban public transportation lane planning cloth network method is supplied.
The present invention adopts the technical scheme that solve above-mentioned technical problem：
A kind of urban public transportation lane plans cloth network method, and realization process is：
Step 1：Determine the city bus volume of the flow of passengers and public transport operation speed.According to Urban traffic demand prediction result, by city
It is online that traffic passenger flow OD amounts in city's are assigned to urban road, according to urban public transport trip proportion, calculates every road in city
On bus passenger flow amount, according to public bus network length and public transport operation time, calculate bus running speed.
Step 2：Establish urban public transportation lane requirements set L.According to urban public transportation lane installation warrants, city is determined
The volume of traffic and bus running velocity conditions necessary to city's setting public transportation lane.It is public according to the urban road that step 1 obtains
The volume of the flow of passengers and bus running speed are handed over, setting public transportation lane condition is met for bus passenger flow amount and public transport operation speed
Road is included in public transportation lane requirements set L.
Step 3：Establish public transportation lane supply set M.Each road in city is screened one by one, is filtered out
Road more than unidirectional 3 track and 3 tracks, is included in set M.
Step 4：Road in the intersection N of set of computations L and set M, set N is the road that can set public transportation lane,
Obtain initial public transportation lane.
Step 5：According to there is provided the variations of Impedance Function of Urban Streets after initial public transportation lane, urban transportation is needed
The urban transportation OD amounts that prediction obtains is asked to redistribute, when the OD volume of traffic is calculated redistributing each section unit in rear road network
Between the ridership Q that transports1With section passenger average travel time T1.And each section transport multiplies after calculating and setting public transportation lane
Objective efficiency index E1=T1/Q1。
Step 6：Establish bus lane network connection section set R.Retrieval can be by initial public transport in city road network
Special lane penetrates through connection section into the net, is included in set R.
Step 7：Section in set R is planned to public transportation lane, then public transportation lane perforation networking, according to setting
The variation of the Impedance Function of road, the urban transportation OD amounts that Urban traffic demand is predicted after public transportation lane perforation road network
It redistributes, the ridership Q for redistributing that each section unit interval transports in rear road network is calculated2It is averaged with section passenger
Travel time T2。
Step 8：Passenger's efficiency index E is transported in each section after calculating public transportation lane perforation networking2=T2/Q2。
Step 9：Compare each front and rear transport passenger's efficiency index E of section setting public transportation lane in set R one by one1And E2Greatly
Small, the section that public transportation lane setting condition is unsatisfactory for for transporting passenger's efficiency index after setting public transportation lane reverts to
Mixed running section.All compare until section each in set R and finish, the public transportation lane network planning in the city is arranged net completion.
The specific method that public transportation lane requirements set L is established in step 2 is：
1) it is predicted according to urban transportation historical data and Urban traffic demand, calculates bus on all roads in the city and transport
Scanning frequency degree
With road public transport vehicle flowrate.
2) each road in city is screened one by one, taking 40 people by each bus calculates, and filters out section
Unidirectionally
Average bus passenger flow volume reach 6000 person-times/peak hour, section be unidirectionally averaged public transport vehicle flowrate be more than 50/
H or high
Hour section unidirectional public transport vehicle flowrate in peak is more than the section of 150/h.
3) set L is established, the road filtered out is added in set L.
Section passenger average travel time T in step 51Computational methods be：
Wherein ti--- take the time used in i-th kind of mode of transportation；
qi--- take the ridership of i-th kind of mode of transportation；
N --- the road section traffic volume mode type number.
The method that bus lane network connects section set R is established in step 6 is：
1) selects the broken end node in initial public transportation lane, and the broken end node i in initial public transportation lane is compiled
Number (i=1,2 ..., m).
2) is checked since node i=1.
3) L is numbered to the section for crossing node i inij(j=1,2 ..., q).
4) is since j=1.
5) judges section LijWhether with initial public transportation lane another node is intersected at, if so, selection LijFor link road
Section, is included in set R, if it is not, performing next step.
6) pairs and section LijL is numbered in intersecting sectionijk(k=1,2 ..., p).
7) is since k=1.
8) judges section LijkWhether with initial public transportation lane a node is intersected at, if so, selection LijAnd LijkFor connection
Section is included in set R.If it is not, perform next step.
9) judges whether k=p is true, if so, next step is performed, if it is not, k=k+1, return to step 8).
10) judges whether j=n is true, if so, next step is performed, if it is not, j=j+1, return to step 5).
11) judges whether i=m is true, if so, terminate, if it is not, i=i+1, return to step 3).
It is by the method that the section in set R is planned to public transportation lane in step 7：
If 1) the perforation sections belong to set M, since the section in set M is all the section in 3 or 3 or more tracks,
Then the section, which is had ready conditions, opens up individual track to serve public transit vehicle, and remaining track can meet other vehicle pass-through items
Part selects a wherein track to be set as public transportation lane.
If 2) the perforation sections are not belonging to set M, its number of track-lines is judged, for unidirectional 2 track, if setting public transport is special
Road, other vehicles can not overtake other vehicles, if but the road section length<500m can then set public transportation lane, other vehicles are on the road
Section does not allow to overtake other vehicles, and is equivalent to unidirectional 1 lane segment.For unidirectional 1 track, Bus road is set, other vehicles are forbidden leading to
Row.
Passenger's efficiency index setting public affairs are transported according to road before and after setting public transportation lane in section each in set R in step 9
Hand over special lane method be：
1) passenger's efficiency index E is transported to the road before and after each section alternative plans public transportation lane in set R1
And E2。
2) road for 3 and 3 or more, if road transports passenger's efficiency index E2<0.8E1, then retain the section
To connect section, otherwise cancel the public transportation lane in the section, retain the section for mixed running road.
3) for the section in unidirectional 2 tracks, if road transports passenger's efficiency index E2<0.9E1, then retain the section
To connect section, otherwise cancel the public transportation lane in the section, retain the section for mixed running road.
4) for the section in unidirectional 1 track, if road transports passenger's efficiency index E2<E1, then retain the section to connect
Section is connect, otherwise cancels the public transportation lane in the section, retains the section for mixed running road.
The beneficial effects of the invention are as follows：
The present invention proposes to connect public transportation lane at some and is also provided with public transportation lane on section into the net and makes
It forms perforation road network, i.e. the present invention makes public transportation lane penetrate through networking.Traditional public transportation lane planing method is only according to road
Travel permit part and public transport amount conditional plan public transportation lane, the public transportation lane of formation is all often respective independent, public transport
The terminus of special lane often becomes bottleneck road, causes traffic jam, influences the overall operation speed of bus.The present invention
The public transportation lane network plan method of proposition, which considers public transportation lane terminus, can become the factor of bottleneck road, the company of proposition
Public transportation lane terminus is connect, plans that the method for forming public transportation lane network, public transportation lane will improve public affairs after forming network
The speed of service of vehicle is handed over, so as to improve the ability that bus transports passenger, increases the attraction of public transport, improves urban transportation
Congestion.
Description of the drawings
Fig. 1 is the principle of the present invention schematic diagram, and Fig. 1 is the flow chart of the present invention, and Fig. 2 is present invention search public transportation lane
The particular flow sheet in section, the initial public transportation lane planning schematic diagram in Tu3Wei Mou cities are connected, Tu4Wei Mou cities public transportation lane adds
Enter to connect the schematic diagram behind section, Tu5Wei Mou cities public transportation lane plans result figure of arranging net.
Specific embodiment
The present invention is described in further detail with embodiment with reference to the accompanying drawings of the specification.One described in present embodiment
The method that kind urban public transportation lane planning is arranged net, the method are specifically performed according to following steps：
1st, as shown in Figure 1, first according to Urban traffic demand prediction result, urban transportation passenger flow OD amounts are assigned to city
On road network.Further according to urban public transport trip proportion, public bus network length and public transport operation time, every is calculated in city
The speed of service of bus passenger flow amount and bus on road.
2nd, according to urban public transportation lane installation warrants, the volume of traffic and public affairs necessary to city setting public transportation lane are determined
Hand over vehicle speed of service condition.According to the urban road bus passenger flow amount and bus running speed obtained in step 1, for public transport
The volume of the flow of passengers and public transport operation speed meet the road of setting public transportation lane condition, are included in public transportation lane requirements set L.
In this step public affairs are established according to whether bus passenger flow amount and public transport operation speed meet setting public transportation lane condition
The specific method for handing over special lane requirements set L is：
1) is predicted according to urban transportation historical data and Urban traffic demand, calculates bus on all roads in the city
The speed of service and road public transport vehicle flowrate.
2) screens each road in city one by one, and taking 40 people by each bus calculates, and filters out section list
Reach 6000 person-times/peak hour, section to average bus passenger flow amount and be unidirectionally averaged public transport vehicle flowrate more than 50/h or peak
The hour unidirectional public transport vehicle flowrate of section is more than the section of 150/h.
3) establishes set L, and the road filtered out is added in set L.
3rd, public transportation lane supply set M is established.Each road in city is screened one by one, filters out unidirectional 3
Road more than track and 3 tracks, is included in set M.
4th, the road in the intersection N of set of computations L and set M, set N is the road that can set public transportation lane, is obtained
Initial public transportation lane.
5th, according to there is provided the variation of Impedance Function of Urban Streets after initial public transportation lane, Urban traffic demand is predicted
Obtained urban transportation OD amounts are redistributed, and the OD volume of traffic is calculated and redistributes each section unit interval transport in rear road network
Ridership Q1With section passenger average travel time T1.And passenger's efficiency is transported in each section after calculating and setting public transportation lane
Index E1=T1/Q1。
Section passenger average travel time T in this step1Computational methods be：
Wherein ti--- take the time used in i-th kind of mode of transportation；
qi--- take the ridership of i-th kind of mode of transportation；
N --- the road section traffic volume mode type number.
6th, bus lane network connection section set R is established.Retrieval can be special by initial public transport in city road network
Road penetrates through connection section into the net, is included in set R.Specific method is：
1) selects the broken end node in initial public transportation lane, and the broken end node i in initial public transportation lane is compiled
Number (i=1,2 ..., m).
2) is checked since node i=1.
3) L is numbered to the section for crossing node i inij(j=1,2 ..., q).
4) is since j=1.
5) judges section LijWhether with initial public transportation lane another node is intersected at, if so, selection LijFor link road
Section, is included in set R, if it is not, performing next step.
6) pairs and section LijL is numbered in intersecting sectionijk(k=1,2 ..., p).
7) is since k=1.
8) judges section LijkWhether with initial public transportation lane a node is intersected at, if so, selection LijAnd LijkFor connection
Section is included in set R.If it is not, perform next step.
9) judges whether k=p is true, if so, next step is performed, if it is not, k=k+1, repeats step 8).
10) judges whether j=n is true, if so, next step is performed, if it is not, j=j+1, repeats step 5) -9).
11) judges whether i=m is true, if so, terminate, if it is not, i=i+1, repeats step 3) -10).
7th, the section in set R is planned to public transportation lane, then public transportation lane perforation networking, it is special according to setting public transport
With the variation of the Impedance Function of road after road perforation road network, the urban transportation OD amounts that Urban traffic demand is predicted are divided again
Match, the ridership Q for redistributing that each section unit interval transports in rear road network is calculated2During with section passenger's average travel
Between T2。
Section in set R in this step, is planned to need to be judged according to road conditions before public transportation lane to have
The method of body is：
If 1) the perforation sections belong to set M, since the section in set M is all the section in 3 or 3 or more tracks,
Then the section, which is had ready conditions, opens up individual track to serve public transit vehicle, and remaining track can meet other vehicle pass-through items
Part selects a wherein track to be set as public transportation lane.
If 2) the perforation sections are not belonging to set M, its number of track-lines is judged, for unidirectional 2 track, if setting public transport is special
Road, other vehicles can not overtake other vehicles, if but the road section length<500m can then set public transportation lane, other vehicles are on the road
Section does not allow to overtake other vehicles, and is equivalent to unidirectional 1 lane segment.For unidirectional 1 track, Bus road is set, other vehicles are forbidden leading to
Row.
8th, passenger's efficiency index E is transported in each section after calculating public transportation lane perforation networking2=T2/Q2。
9th, compare each front and rear transport passenger's efficiency index E of section setting public transportation lane in set R one by one1And E2Size is right
After public transportation lane is set transport passenger's efficiency index be unsatisfactory for public transportation lane setting condition section revert to mixing
Running section.All compare until section each in set R and finish, the public transportation lane network planning in the city is arranged net completion.
The variation for transporting passenger's efficiency index in this step according to section before and after setting public transportation lane carries out judging the road
Whether section needs the specific method for reverting to mixed running road to be：
1) transports passenger's efficiency index to the road before and after each section alternative plans public transportation lane in set R
E1And E2。
2) is for the road of 3 and 3 or more, if road transports passenger's efficiency index E2<0.8E1, then retain the road
Section is connection section, otherwise cancels the public transportation lane in the section, retains the section for mixed running road.
3) for unidirectional 2 tracks section, if road transports passenger's efficiency index E2<0.9E1, then retain the section
To connect section, otherwise cancel the public transportation lane in the section, retain the section for mixed running road.
4) for unidirectional 1 track section, if road transports passenger's efficiency index E2<E1, then retaining the section is
Section is connected, otherwise cancels the public transportation lane in the section, retains the section for mixed running road.
Embodiment
Certain city is chosen as instance analysis, to verify and evaluate the method for the present invention.The whole city is existing public bus network 141
Item, total line length 2854km.City's bus passenger flow amount is generally higher, according to whole city's resident trip traffic study it is found that wherein
More than the 40% road section peak hour volume of the flow of passengers is more than 6000 people.Road conditions are good, most transit corridor vehicle
Road number is all more than unidirectional 3 track.
According to the city existing road situation in the city and bus trip OD amounts, peak hour bus passenger flow amount in city is chosen
Set L is formed in 6000 person-times or more of roads, chooses road composition set M, set of computations L of the number of track-lines more than or equal to 3
With the intersection N of set M, it is initial public transportation lane by the roading in set N, obtains initial public transportation lane such as Fig. 3 institutes
Show, in figure between each public transportation lane independently of each other, can all form bottleneck road in the terminus of every public transportation lane, make
Into traffic congestion, bus travel speed is low, and the whole average operating time of bus traveling is low, in order to eliminate public transport operation bottleneck
Initial public transportation lane is planned perforation networking by section.Impedance Function of Urban Streets is changed after setting public transportation lane,
According to the variation of road Impedance Function at this time, the urban transportation OD amounts that Urban traffic demand is predicted are redistributed, are counted
It calculates and obtains the ridership Q that the OD volume of traffic redistributes each section unit interval transport in rear road network1It is averaged out with section passenger
Row time T1.And passenger's efficiency index is transported in each section after calculating and setting public transportation lane.
Public transportation lane can be connected the section of perforation by selection on the basis of initial public transportation lane, and selection is obtained
Section be set as public transportation lane, obtain public transportation lane programme as shown in Figure 4.
Each section transports passenger's efficiency index and changes on the public transportation lane obtained at this time, according to transport passenger's efficiency
The variation of index, detects whether public transportation lane connection section needs to revert to mixed running section one by one, and it is special to obtain public transport
The final planned road network in road, final result are as shown in Figure 5.
Claims (6)
1. a kind of urban public transportation lane plans cloth network method, it is characterized in that：The realization process of the method is：
Step 1：Determine the city bus volume of the flow of passengers and public transport operation speed：According to Urban traffic demand prediction result, city is handed over
It is online that logical passenger flow OD amounts are assigned to urban road, according to urban public transport trip proportion, in calculating city on every road
Bus passenger flow amount according to public bus network length and public transport operation time, calculates bus running speed；
Step 2：Establish urban public transportation lane requirements set L：According to urban public transportation lane installation warrants, determine that city is set
The volume of traffic necessary to putting public transportation lane and bus running velocity conditions；The urban road public transport visitor obtained according to step 1
Flow and bus running speed meet bus passenger flow amount and public transport operation speed in the road of setting public transportation lane condition
Road is included in public transportation lane requirements set L；
Step 3：Establish public transportation lane supply set M：Each road in city is screened one by one, filters out unidirectional 3
Road more than track and 3 tracks, is included in set M；
Step 4：Road in the intersection N of set of computations L and set M, set N is the road that can set public transportation lane, is obtained
Initial public transportation lane；
Step 5：It is according to there is provided the variation of Impedance Function of Urban Streets after initial public transportation lane, Urban traffic demand is pre-
The urban transportation OD amounts measured are redistributed, and the OD volume of traffic is calculated and redistributes each section unit interval fortune in rear road network
The ridership Q sent1With section passenger average travel time T1；And passenger's effect is transported in each section after calculating and setting public transportation lane
Rate index E1=T1/Q1；
Step 6：Establish bus lane network connection section set R：Retrieval can be special by initial public transport in city road network
Road penetrates through connection section into the net, is included in set R；
Step 7：Section in set R is planned to public transportation lane, then public transportation lane perforation networking, according to setting public transport
The variation of the Impedance Function of road after special lane perforation road network, the urban transportation OD amounts that Urban traffic demand is predicted are again
The ridership Q for redistributing that each section unit interval transports in rear road network is calculated in distribution2With section passenger's average travel
Time T2；
Step 8：Passenger's efficiency index E is transported in each section after calculating public transportation lane perforation networking2=T2/Q2；
Step 9：Compare each front and rear transport passenger's efficiency index E of section setting public transportation lane in set R one by one1And E2Size,
For setting public transportation lane after transport passenger's efficiency index be unsatisfactory for public transportation lane setting condition section revert to it is mixed
Close running section；All compare until section each in set R and finish, the public transportation lane network planning in the city is arranged net completion.
2. a kind of urban public transportation lane planning cloth network method according to claim 1, it is characterised in that built in step 2
The specific method of vertical public transportation lane requirements set L is：
1) it is predicted according to urban transportation historical data and Urban traffic demand, calculates bus running speed on all roads in the city
Degree and road public transport vehicle flowrate；
2) each road in city is screened one by one, taking 40 people by each bus calculates, and it is unidirectional to filter out section
Average bus passenger flow volume reaches 6000 person-times/peak hour, section and is unidirectionally averaged public transport vehicle flowrate more than 50/h or peak
The hour unidirectional public transport vehicle flowrate of section is more than the section of 150/h；
3) set L is established, the road filtered out is added in set L.
3. a kind of urban public transportation lane planning cloth network method according to claim 1 or 2, it is characterised in that in step 5
Section passenger average travel time T1Computational methods be：
Wherein ti--- take the time used in i-th kind of mode of transportation；
qi--- take the ridership of i-th kind of mode of transportation；
N --- the road section traffic volume mode type number.
4. a kind of urban public transportation lane planning cloth network method according to claim 3, it is characterised in that built in step 6
Founding the method that bus lane network connects section set R is：
1) selects the broken end node in initial public transportation lane, and (i is numbered to the broken end node i in initial public transportation lane
=1,2 ..., m)；
2) is checked since node i=1；
3) L is numbered to the section for crossing node i inij, j=1,2 ..., q；
4) is since j=1；
5) judges section LijWhether with initial public transportation lane another node is intersected at, if so, selection LijIt, will to connect section
It is included in set R, if it is not, performing next step；
6) pairs and section LijL is numbered in intersecting sectionijk, k=1,2 ..., p；
7) is since k=1；
8) judges section LijkWhether with initial public transportation lane a node is intersected at, if so, selection LijAnd LijkFor link road
Section, is included in set R；If it is not, perform next step；
9) judges whether k=p is true, if so, next step is performed, if it is not, k=k+1, return to step 8)；
10) judges whether j=q is true, if so, next step is performed, if it is not, j=j+1, return to step 5)；
11) judges whether i=m is true, if so, terminate, if it is not, i=i+1, return to step 3).
5. a kind of urban public transportation lane planning cloth network method according to claim 1 or 4, it is characterised in that in step 7
It is by the method that the section in set R is planned to public transportation lane：
If 1) the perforation sections belong to set M, since the section in set M is all the section in 3 or 3 or more tracks, then should
Section, which is had ready conditions, opens up individual track to serve public transit vehicle, and remaining track can meet other vehicle pass-through conditions,
A selection wherein track is set as public transportation lane；
If 2) the perforation sections are not belonging to set M, its number of track-lines is judged, for unidirectional 2 track, if setting public transportation lane,
He can not overtake other vehicles at vehicle, if but the road section length<500m can then set public transportation lane, other vehicles in the section not
Allow to overtake other vehicles, be equivalent to unidirectional 1 lane segment；For unidirectional 1 track, Bus road is set, and no through traffic for other vehicles.
A kind of 6. urban public transportation lane planning cloth network method according to claim 5, it is characterised in that root in step 9
It is according to the method that road before and after setting public transportation lane in section each in set R transports passenger's efficiency index setting public transportation lane：
1) passenger's efficiency index E is transported to the road before and after each section alternative plans public transportation lane in set R1And E2；
2) road for 3 and 3 or more, if road transports passenger's efficiency index E2<0.8E1, then retain the section to connect
Section is connect, otherwise cancels the public transportation lane in the section, retains the section for mixed running road；
3) for the section in unidirectional 2 tracks, if road transports passenger's efficiency index E2<0.9E1, then retain the section to connect
Section is connect, otherwise cancels the public transportation lane in the section, retains the section for mixed running road；
4) for the section in unidirectional 1 track, if road transports passenger's efficiency index E2<E1, then retain the section for link road
Otherwise section cancels the public transportation lane in the section, retain the section for mixed running road.
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| CN112885076B (en) * | 2020-12-30 | 2022-06-24 | 北京交通大学 | Method for analyzing influence range of overflow traffic flow after setting bus lane |
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