CN103854491B - A kind of unidirectional preferential method to set up of backbone public transport intersection signal based on optimum bus station spacing - Google Patents

Abstract

The invention discloses a kind of unidirectional preferential method to set up of backbone public transport intersection signal based on optimum bus station spacing, comprise step 10) and gather bus trunk line service data, step 20) determine the theoretical optimum station spacing of bus trunk line, step 30) determine bus trunk line website (not containing first and last station) quantity, step 40) determine the initial position of bus trunk line website (not containing first and last station), step 50) adjust and determine bus trunk line website (not containing first and last station) position, step 60) calculate bus trunk line working time, step 70) determine intersection signal timing scheme and step 80) determine the frequency of the unidirectional vehicle of bus trunk line.This inventive method can well process the site distance of urban newly-built area territory bus trunk line and the design of position, hands over and can give its signal priority in crossing.

Description

A kind of unidirectional preferential method to set up of backbone public transport intersection signal based on optimum bus station spacing

Technical field

The present invention relates to the planning of city's main road axles public transport, design and intersection signal priority acccess control technology, particularly relate to a kind of unidirectional preferential method to set up of backbone public transport intersection signal based on optimum bus station spacing.

Background technology

Along with the rapid growth of Chinese national economy, the rapid raising of the level of urbanization, the scale in city is also increasing, and this traffic problems occurred with this also more and more annoying the supvr in city.Urban transportation is never subject to concern and the attention of governments at all levels and Du Hui all circles as it is, and scholar also proposes many solutions to alleviate traffic problems.First develop the important resolving ideas that public transport proposes just under such overall background.

In fact, first develop public transport to be adjustment traffic trip structure, to alleviate the important means of urban traffic blocking.On the one hand, public transportation system have carrying capacity large, transport that efficiency is high, energy resource consumption is low, relative pollution less, the advantage such as transportation cost is low, make it to become the important channel alleviating urban transport problems.On the other hand, China city space is expanded rapidly with city function high concentration and the feature of depositing, also determine the public transportation system having only and promote Level-of-Services of Public Transit, Erecting and improving energetically, a contingent traffic congestion difficult problem could be alleviated while meeting city high density compact development.At present, at the technical elements of public traffic in priority, the scholar of China has proposed many technology, mainly contains that public transport time priority, public transport space are preferential in short, intelligent bus technology etc.Above-mentioned technology is Development of Urban public transit system, alleviation urban congestion problem plays a significant role, but for some special situations, still there is certain technological gap.

In new planning district or the new district in city, new planning must be needed or open many public bus networks, person wherein by relating to the trend of public bus network, the position of website, bus departure interval, public transport joins many-sided problem needs such as car and presets.At present, the existing technology in China's public transport field substantially can be independent the problem of the above-mentioned various aspects of solution, but integrate owing to lacking in system level, the public transit system inside in new planning district is often caused to there is contradiction, particularly existing problems in the implementing of public traffic in priority, operational effect is bad.

Summary of the invention

Object of the present invention in order to solve new planning district, city or new district, new planning or open public bus network Bus stop planning, arrange that reconnaissance and crossing bus signals preferentially and specially propose.Specifically, this inventive method has relied on existing ripe bus station spacing to arrange technology and public transport intersection signal precedence technique, and on this basis, based on the working time of bus station's spacing determination public transit vehicle, the signal time distributing conception of adjustment backbone public transport crossing along the line, well prior art is cascaded, the problem that city upblic traffic station is arranged and intersection signal is preferentially arranged can well be solved.

The technical solution used in the present invention is:

A kind of unidirectional preferential method to set up of backbone public transport intersection signal based on optimum bus station spacing, it is characterized in that first backbone public transport will determine optimum bus station's spacing according to the operation characteristic of public bus network, subsequently based on the working time of bus station's spacing determination public transit vehicle, the signal time distributing conception of adjustment backbone public transport crossing along the line, realize the unidirectional preferential setting of backbone public transport intersection signal.Comprise following steps:

Step 10) gathers bus trunk line service data;

The bus trunk line service data gathered comprises following data: the position, initial station of bus trunk line, terminal position, and bus trunk line unidirectional every day to run order of classes or grades at school K, departure interval G, the 1st order of classes or grades at school public transport from the frequency F of initial station ₁, the length L of bus trunk line, the bus passenger par a of bus trunk line unit length along the line, the mean time consumption w that gets on or off the bus of each passenger, the distance S of bus trunk line crossing along the line quantity I, distance public transport initial station, i-th crossing _i, each crossing peak hour flow flux and flow direction, bus trunk line is along the length L in part of path quantity J, bus trunk line jth section along the line _j, the vehicle operating average speed v that bus trunk line is along the line.Wherein, bus trunk line equals crossing along the line quantity I along part of path quantity J and adds 1, the length L in bus trunk line jth section along the line _jcan be obtained by following formula

Step 20) determine the theoretical optimum station spacing of bus trunk line;

According to the bus trunk line service data collected in step 10), adopt the method described in national inventing patent " method for setting stop stations of urban bus line " (patent No. is 201010262999.9) of Southeast China University's application, incur loss through delay based on public transit system the bus stop space D that minimum principle calculates bus trunk line per capita, and D is defined as the theoretical optimum station spacing of this bus trunk line.

Step 30) determine bus trunk line website (not containing first and last station) quantity;

Website (not containing first and last station) the quantity N of bus trunk line can be calculated by following formula wherein, N is website (not containing the first and last station) quantity of bus trunk line, N be greater than 0 integer, [X] represents and rounds up to X, and wherein X is the decimal needing to round up.

Step 40) determine the initial position of bus trunk line website (not containing first and last station);

The initial distance D' of the website distance public transport initial station of the n-th bus trunk line _nd' can be obtained by following formula _n=nD, wherein, n is website (not containing the first and last station) sequence number of bus trunk line, and n is integer and increases successively from initial station to terminal.

Step 50) adjust and determine bus trunk line website (not containing first and last station) position;

To the initial position of each bus station (not containing first and last station), check the distance of itself and neighbouring crossing, if there is crossing within the scope of its neighbouring 50 meters, then adjust the position of this bus station, make its distance from nearest crossing be not less than 50 meters; Otherwise do not adjust the position of bus station.Check and after having adjusted the position of all websites (not containing first and last station), finally determine bus trunk line website (not containing first and last station) position.

Step 50) described in check and after having adjusted the position of all websites (not containing first and last station), finally determine bus trunk line website (not containing first and last station) position, the distance of the n-th bus trunk line website (not containing first and last station) from bus trunk line initial station can be determined by following formula wherein, D _nbe the distance of the n-th bus trunk line website (not containing first and last station) from bus trunk line initial station, Q _nfor near public transport side, initial station and from the nearest crossing of the n-th bus trunk line website, this crossing from the distance of bus trunk line initial station, H _nfor away from public transport side, initial station and from the nearest crossing of the n-th bus trunk line website, this crossing is from the distance of bus trunk line initial station.

Step 60) calculate bus trunk line working time;

Bus trunk line can be obtained by following formula at the running time T j in jth section along the line wherein, Σ Stop _jfor public transit vehicle is in the berthing time summation of all websites in jth section, Σ Stop _j=mawD.Wherein, m is the quantity of jth section website.The T.T. that public transit vehicle runs an one way is $T_{\mathrm{total}}=\underset{j=1}{\overset{J}{\mathrm{\Σ}}}{T}_j$

Step 70) determine intersection signal timing scheme;

According to the peak hour flow flux and flow direction of each crossing collected in step 10), Robert Webster method (WEBSTER method) is adopted to calculate and determine the initialize signal timing scheme of each crossing, subsequently by the signal timing dial cycle duration of all crossings all unification increase to maximum signal period duration C, and the time increased after signal period duration is expanded, be increased to each phase place according to the duration proportional distribution of each phase place in original signal timing scheme.Subsequently, revise and determine the final signal timing scheme of each crossing.Wherein, C is in a described I crossing, the maximal value in all signal periods adopting Robert Webster method (WEBSTER method) to calculate.

Step 70) in revise and determine the final signal timing scheme of each crossing, mainly through adjusting the bus trunk line green light start time of each crossing, when making public transport arrive each crossing, the signal of crossing is green light on bus travel direction.Can specifically be illustrated as: the bus trunk line green light start time of a jth crossing can be determined by following formula wherein, G _{j, transit}for the bus trunk line green light phase place duration of a jth crossing, f _jfor integer, and f _jthe requirement of the inequality below demand fulfillment $-(F_1+\underset{h=1}{\overset{j}{\mathrm{\Σ}}}{T}_h-\frac{1}{2}{G}_{j,\mathrm{transit}}\frac{1}{2})\≤f_{j}C\≤86400-(F_1+\underset{h=1}{\overset{j}{\mathrm{\Σ}}}{T}_h-\frac{1}{2}{G}_{j,\mathrm{transit}}\frac{1}{2}).$

Step 80) determine the frequency of the unidirectional vehicle of bus trunk line;

The bus trunk line of kth order of classes or grades at school is by the frequency F of vehicle mailing to terminal at first stop _kcan be obtained by following formula wherein, k is the order of classes or grades at school sequence number of dispatching a car of bus trunk line.

Beneficial effect:

1), the inventive method relies on public transport planning and the public traffic in priority technology of existing maturation, current proven technique is incorporated in public transport bus priority at intersection aspect to knot and makes certain mend gene, can well solve site location design and the intersection signal priority issues of city's main road axles public transport, method is practical.

2), the inventive method do not need extra road reformation and infrastructure to drop into, and thus its fund input is little, less demanding to the finance in city.Particularly in the newly-built region in city, directly can arrange bus station in conjunction with the construction of urban road, and arrange intersection signal timing scheme, the operability of invention is very strong.

Accompanying drawing explanation

Fig. 1 is overview flow chart of the present invention.

Fig. 2 is example schematic diagram of the present invention

Fig. 3 is the site location schematic diagram of example of the present invention.

Embodiment

Below in conjunction with the drawings and specific embodiments, the present invention will be further described.

Accompanying drawing 1 is overview flow chart of the present invention.Can find out, a kind of unidirectional preferential method to set up of backbone public transport intersection signal based on optimum bus station spacing, it is characterized in that first backbone public transport will determine optimum bus station's spacing according to the operation characteristic of public bus network, subsequently based on the working time of bus station's spacing determination public transit vehicle, the signal time distributing conception of adjustment backbone public transport crossing along the line, realize the unidirectional preferential setting of backbone public transport intersection signal.Comprise following steps 8 steps:

Step 10) gathers bus trunk line service data;

The bus trunk line service data gathered comprises following data: the position, initial station of bus trunk line, terminal position, and bus trunk line unidirectional every day to run order of classes or grades at school K, departure interval G, the 1st order of classes or grades at school public transport from the frequency F of initial station ₁, the length L of bus trunk line, the bus passenger par a of bus trunk line unit length along the line, the mean time consumption w that gets on or off the bus of each passenger, the distance S of bus trunk line crossing along the line quantity I, distance public transport initial station, i-th crossing _i, each crossing peak hour flow flux and flow direction, bus trunk line is along the length L in part of path quantity J, bus trunk line jth section along the line _j, the vehicle operating average speed v that bus trunk line is along the line.Wherein, bus trunk line equals crossing along the line quantity I along part of path quantity J and adds 1, the length L in bus trunk line jth section along the line _jcan be obtained by following formula

Step 10) is the basic steps of aspect of the present invention: data acquisition, provides required data supporting by for follow-up step, and relevant data can be obtained by the operator of public transport, Urban Traffic Planning department, vehicle supervision department.

Step 20) determine the theoretical optimum station spacing of bus trunk line;

According to the bus trunk line service data collected in step 10), adopt the method described in national inventing patent " method for setting stop stations of urban bus line " (patent No. is 201010262999.9) of Southeast China University's application, incur loss through delay based on public transit system the bus stop space D that minimum principle calculates bus trunk line per capita, and D is defined as the theoretical optimum station spacing of this bus trunk line.

By step 20) national inventing patent " method for setting stop stations of urban bus line " introduced, just can determine the optimum station spacing of the theory of this bus trunk line applicable, just can determine the website initial position of bus trunk line thus in subsequent step.

Step 30) determine bus trunk line website (not containing first and last station) quantity;

Website (not containing first and last station) the quantity N of bus trunk line can be calculated by following formula wherein, N is website (not containing the first and last station) quantity of bus trunk line, N be greater than 0 integer, [X] represents and rounds up to X, and wherein X is the decimal needing to round up.

Step 40) determine the initial position of bus trunk line website (not containing first and last station);

The initial distance D' of the website distance public transport initial station of the n-th bus trunk line _nd' can be obtained by following formula _n=nD, wherein, n is website (not containing the first and last station) sequence number of bus trunk line, and n is integer and increases successively from initial station to terminal.

Step 50) adjust and determine bus trunk line website (not containing first and last station) position;

To the initial position of each bus station (not containing first and last station), check the distance of itself and neighbouring crossing, if there is crossing within the scope of its neighbouring 50 meters, then adjust the position of this bus station, make its distance from nearest crossing be not less than 50 meters; Otherwise do not adjust the position of bus station.Check and after having adjusted the position of all websites (not containing first and last station), finally determine bus trunk line website (not containing first and last station) position.

Step 50) described in check and after having adjusted the position of all websites (not containing first and last station), finally determine bus trunk line website (not containing first and last station) position, the distance of the n-th bus trunk line website (not containing first and last station) from bus trunk line initial station can be determined by following formula wherein, D _nbe the distance of the n-th bus trunk line website (not containing first and last station) from bus trunk line initial station, Q _nfor near public transport side, initial station and from the nearest crossing of the n-th bus trunk line website, this crossing from the distance of bus trunk line initial station, H _nfor away from public transport side, initial station and from the nearest crossing of the n-th bus trunk line website, this crossing is from the distance of bus trunk line initial station.

Step 50) mainly in order to determine that the position of bus station is arranged not in the coverage of crossing, prevent the stop behavior of entering the station of public transport from causing larger impact to crossing, step should be changed by the position of the position and nearest crossing thereof that check each website one by one, if distance is between the two less than 50 meters, then adjust the position of bus station.By this step, the site location of bus trunk line just finally can be determined.

Step 60) calculate bus trunk line working time;

Bus trunk line is in the running time T in jth section along the line _jcan be obtained by following formula wherein, Σ Stop _jfor public transit vehicle is in the berthing time summation of all websites in jth section, Σ Stop _j=maD.Wherein, m is the quantity of jth section website.The T.T. that public transit vehicle runs an one way is $T_{\mathrm{total}}=\underset{j=1}{\overset{J}{\mathrm{\Σ}}}{T}_j$

Step 70) determine intersection signal timing scheme;

According to the peak hour flow flux and flow direction of each crossing collected in step 10), Robert Webster method (WEBSTER method) is adopted to calculate and determine the initialize signal timing scheme of each crossing, subsequently by the signal timing dial cycle duration of all crossings all unification increase to maximum signal period duration C, and the time increased after signal period duration is expanded, be increased to each phase place according to the duration proportional distribution of each phase place in original signal timing scheme.Subsequently, revise and determine the final signal timing scheme of each crossing.Wherein, C is in a described I crossing, the maximal value in all signal periods adopting Robert Webster method (WEBSTER method) to calculate.

In this step, revise and determine the final signal timing scheme of each crossing, mainly through adjusting the bus trunk line green light start time of each crossing, when making public transport arrive each crossing, the signal of crossing is green light on bus travel direction.Can specifically be illustrated as: the bus trunk line green light start time of a jth crossing can be determined by following formula wherein, G _{j, transit}for the bus trunk line green light phase place duration of a jth crossing, f _jfor integer, and f _jthe requirement of the inequality below demand fulfillment $-(F_1+\underset{h=1}{\overset{j}{\mathrm{\Σ}}}{T}_h-\frac{1}{2}{G}_{j,\mathrm{transit}}\frac{1}{2})\≤f_{j}C\≤86400-(F_1+\underset{h=1}{\overset{j}{\mathrm{\Σ}}}{T}_h-\frac{1}{2}{G}_{j,\mathrm{transit}}\frac{1}{2}).$

Step 80) determine the frequency of the unidirectional vehicle of bus trunk line;

The bus trunk line of kth order of classes or grades at school is by the frequency F of vehicle mailing to terminal at first stop _kcan be obtained by following formula wherein, k is the order of classes or grades at school sequence number of dispatching a car of bus trunk line.

Below in conjunction with an example, the inventive method is described further.

Attachedly Figure 2 shows that the road schematic diagram that certain city needs to arrange bus trunk line.As seen from the figure, this section of road comprises 4 crossings altogether, and the length of every section of road is as following table 1) shown in.

Table 1) road basic condition data

Index	Data	Index	Data
				L 0	200m	L 1	300m
L 2	500m	L 3	400m
				L 4	200m	——	——

After gathering bus trunk line service data by step 10), the related data collected is as following table 2) shown in:

Table 2) bus trunk line service data

In addition, the length L in bus trunk line jth section along the line _jby table 1) provide.The peak hour flow flux and flow direction data of each crossing are not listed herein in detail, follow-up directly in step 70) in list the crossing timing scheme adopting bus trunk line crossing along the line vehicle flowrate data acquisition.

Step 20) determine the theoretical optimum station spacing of bus trunk line;

By the bus station's distance defining method provided in this step national inventing patent " method for setting stop stations of urban bus line ", the optimum station spacing D=400m of the theory obtaining being applicable to obtaining this example bus trunk line.Special needs to be pointed out is, when the theoretical optimum station spacing of this step determination bus trunk line, need to use the data do not mentioned in some step 10), because these data are listed in detail in the claim of patent of invention " method for setting stop stations of urban bus line ", thus do not provide these data in the present invention.

Step 30) determine bus trunk line website (not containing first and last station) quantity;

Website (not containing first and last station) the quantity N of bus trunk line can be calculated by following formula by calculating, obtain website (not containing first and last station) the quantity N=3. of this example bus trunk line

Step 40) determine the initial position of bus trunk line website (not containing first and last station);

The initial distance D' of the website distance public transport initial station of the n-th bus trunk line _nd' can be obtained by following formula _n=nD, thus, can obtain the initial distance D' of the website distance public transport initial station of n-th bus trunk line of this example _n, see the following form 3) shown in.

Table 3) initial position of bus trunk line website (not containing first and last station)

Website distance	D' 1	D' 2	D' 3
				Numerical value	400m	800m	1200m

Step 50) adjust and determine bus trunk line website (not containing first and last station) position;

To the initial position of each bus station (not containing first and last station), check the distance of itself and neighbouring crossing, if there is crossing within the scope of its neighbouring 50 meters, then adjust the position of this bus station, make its distance from nearest crossing be not less than 50 meters; Otherwise do not adjust the position of bus station.Check and after having adjusted the position of all websites (not containing first and last station), finally determine bus trunk line website (not containing first and last station) position.

By this step 50) to this example table 3) in all websites position inspection find, all websites all not near crossing, thus table 3) result be the bus trunk line site location finally determined.Shown in the visible accompanying drawing 3 of site location after determining.

Step 60) calculate bus trunk line working time;

Bus trunk line is in the running time T in jth section along the line _jcan be obtained by following formula wherein, Σ Stop _jfor public transit vehicle is in the berthing time summation of all websites in jth section, Σ Stop _j=mawD.Wherein, m is the quantity of jth section website.The T.T. that public transit vehicle runs an one way is the running time T of bus trunk line in jth section along the line of this example _jresult of calculation sees the following form 4).

Table 4) bus trunk line working time

Working time

T 1

T 2

T 3

T 4

T 5

T total

Numerical value

20s

50s

70s

60s

20s

220s

Step 70) determine intersection signal timing scheme;

According to the peak hour flow flux and flow direction of each crossing collected in step 10), Robert Webster method (WEBSTER method) is adopted to calculate and determine the initialize signal timing scheme of each crossing, subsequently by the signal timing dial cycle duration of all crossings all unification increase to maximum signal period duration C, and the time increased after signal period duration is expanded, be increased to each phase place according to the duration proportional distribution of each phase place in original signal timing scheme.Subsequently, revise and determine the final signal timing scheme of each crossing.Wherein, C is in a described I crossing, the maximal value in all signal periods adopting Robert Webster method (WEBSTER method) to calculate.

By the data that this step collects example, first can obtain maximum signal period duration C=120s, obtain the phase place duration of each crossing subsequently, shown in seeing the following form.

Table 5) each intersection signal timing duration

In this step, revise and determine the final signal timing scheme of each crossing, mainly through adjusting the bus trunk line green light start time of each crossing, when making public transport arrive each crossing, the signal of crossing is green light on bus travel direction.Can specifically be illustrated as: the bus trunk line green light start time of a jth crossing can be determined by following formula wherein, G _{j, transit}for the bus trunk line green light phase place duration of a jth crossing, f _jfor integer, and f _jthe requirement of the inequality below demand fulfillment $-(F_1+\underset{h=1}{\overset{j}{\mathrm{\Σ}}}{T}_h-\frac{1}{2}{G}_{j,\mathrm{transit}}\frac{1}{2})\≤f_{j}C\≤86400-(F_1+\underset{h=1}{\overset{j}{\mathrm{\Σ}}}{T}_h-\frac{1}{2}{G}_{j,\mathrm{transit}}\frac{1}{2}).$

Finally, the bus trunk line green light start time of each crossing is obtained:

Table 6) each crossing bus trunk line green light start time

Crossing sequence number	Bus trunk line green light start time	f jScope
			Crossing 1	6:59:59+120f 1	-25199≤120f 1≤61201
Crossing 2	7:00:46+120f 2	-25246≤120f 2≤61154
			Crossing 3	7:01:59+120f 3	-25319≤120f 3≤61081
Crossing 4	7:02:56+120f 4	-25376≤120f 4≤61024

After the start time of phase place 1 determining each crossing, start time, the finish time of other phase places also can pass through table 6) push over and obtain.Same, the start time of each phase place in other cycles and finish time also can be obtained by plus-minus cycle C.

Step 80) determine the frequency of the unidirectional vehicle of bus trunk line;

The bus trunk line of kth order of classes or grades at school is by the frequency F of vehicle mailing to terminal at first stop _kcan be obtained by following formula wherein, k is the order of classes or grades at school sequence number of dispatching a car of bus trunk line.By calculating, in this example, kth order of classes or grades at school bus trunk line is by the frequency F of vehicle mailing to terminal at first stop _k=7:00:00+360 (k-1).

Claims (3)

1. the unidirectional preferential method to set up of backbone public transport intersection signal based on optimum bus station spacing, it is characterized in that, first backbone public transport will determine optimum bus station's spacing according to the operation characteristic of public bus network, subsequently based on the working time of bus station's spacing determination public transit vehicle, the signal time distributing conception of adjustment backbone public transport crossing along the line, realize the unidirectional preferential setting of backbone public transport intersection signal, specifically comprise following steps:

Step 10) gather bus trunk line service data;

The bus trunk line service data gathered comprises following data: the position, initial station of bus trunk line, terminal position, bus trunk line unidirectional every day to run order of classes or grades at school K, departure interval G, the 1st order of classes or grades at school public transport from the frequency F of initial station ₁, the length L of bus trunk line, the bus passenger par a of bus trunk line unit length along the line, the mean time consumption w that gets on or off the bus of each passenger, bus trunk line crossing along the line quantity I, distance public transport initial station, i-th crossing distance S _i, the peak hour flow flux and flow direction of each crossing, bus trunk line is along the length L in part of path quantity J, bus trunk line jth section along the line _jwith the vehicle operating average speed v that bus trunk line is along the line, wherein, bus trunk line equals crossing along the line quantity I along part of path quantity J and adds 1, the length L in bus trunk line jth section along the line _jobtained by following formula

Step 20) determine the theoretical optimum station spacing of bus trunk line;

According to step 10) in the bus trunk line service data that collects, incur loss through delay based on public transit system the bus stop space D that minimum principle calculates bus trunk line per capita, and D be defined as the theoretical optimum station spacing of this bus trunk line;

Step 30) determine the quantity of bus trunk line website;

The website of described bus trunk line is not containing first and last station, and its quantity N is calculated by following formula wherein, N be greater than 0 integer, [X] represents and rounds up to X, and wherein X needs the decimal that rounds up;

Step 40) determine the initial position of described bus trunk line website;

The initial distance D' of the website distance public transport initial station of the n-th bus trunk line _nd' is obtained by following formula _n=nD, wherein, n is the website sequence number of described bus trunk line, and n is integer and increases successively from initial station to terminal;

Step 50) adjust and determine the position of described bus trunk line website;

To the initial position of each described bus trunk line website, check the distance of itself and neighbouring crossing, if there is crossing within the scope of its neighbouring 50 meters, then adjust the position of this bus station, make its distance from nearest crossing be not less than 50 meters; Otherwise do not adjust the position of bus station; Check and after having adjusted the position of all websites, finally determine the position of described bus trunk line website;

Step 60) calculate bus trunk line working time;

Bus trunk line is in the running time T in jth section along the line _jobtained by following formula wherein, Σ Stop _jfor public transit vehicle is in the berthing time summation of all websites in jth section, Σ Stop _j=mawD; Wherein, m is the quantity of jth section website, and the T.T. that public transit vehicle runs an one way is

Step 70) determine intersection signal timing scheme;

According to step 10) in the peak hour flow flux and flow direction of each crossing that collects, Robert Webster method (WEBSTER method) is adopted to calculate and determine the initialize signal timing scheme of each crossing, subsequently by the signal timing dial cycle duration of all crossings all unification increase to maximum signal period duration C, and the time increased after signal period duration is expanded, be increased to each phase place according to the duration proportional distribution of each phase place in original signal timing scheme; Subsequently, revise and determine the final signal timing scheme of each crossing; Wherein, C is in a described I crossing, the maximal value in all signal periods adopting Robert Webster method (WEBSTER method) to calculate;

Step 80) determine the frequency of the unidirectional vehicle of bus trunk line;

The bus trunk line of kth order of classes or grades at school is by the frequency F of vehicle mailing to terminal at first stop _kobtained by following formula wherein, k is the order of classes or grades at school sequence number of dispatching a car of bus trunk line.

2. the unidirectional preferential method to set up of backbone public transport intersection signal according to claim 1, it is characterized in that, described step 50) described in check and after having adjusted the position of all websites, finally determine the position of described bus trunk line website, determine the distance of the n-th bus trunk line website from bus trunk line initial station by following formula wherein, D _nbe the distance of the n-th bus trunk line website from bus trunk line initial station, Q _nfor near public transport side, initial station and from the nearest crossing of the n-th bus trunk line website, this crossing from the distance of bus trunk line initial station, H _nfor away from public transport side, initial station and from the nearest crossing of the n-th bus trunk line website, this crossing is from the distance of bus trunk line initial station.

3. the unidirectional preferential method to set up of backbone public transport intersection signal according to claim 1, it is characterized in that, described step 70) in revise and determine the final signal timing scheme of each crossing, mainly through adjusting the bus trunk line green light start time of each crossing, when making public transport arrive each crossing, the signal of crossing is green light on bus travel direction; Specifically be illustrated as: the bus trunk line green light start time of a jth crossing is determined by following formula wherein, G _{j, transit}for the bus trunk line green light phase place duration of a jth crossing, f _jfor integer, and f _jthe requirement of the inequality below demand fulfillment $-(F_1+\underset{h=1}{\overset{j}{\Σ}}{T}_h-\frac{1}{2}{G}_{j,transit}\frac{1}{2})\≤f_{j}C\≤86400-(F_1+\underset{h=1}{\overset{j}{\Σ}}{T}_h-\frac{1}{2}{G}_{j,transit}\frac{1}{2}).$