CN103854491A - Single-direction preferential signal setting method for bus intersection of trunk line based on optimal bus station interval - Google Patents

Abstract

The invention discloses a single-direction preferential signal setting method for the bus intersection of a trunk line based on an optimal bus station interval. The method comprises the following steps: (10) acquiring running data of a bus trunk line; (20) determining the theoretical optimal interval of the bus trunk line; (30) determining the quantity of stations (not including head and tail stations) on the bus trunk line; (40) determining the initial position of the stations (not including head and tail stations) on the bus trunk line; (50) adjusting and determining the positions of the stations (not including head and tail stations) on the bus trunk line; (60) calculating the running time of the bus trunk line; (70) determining an intersection signal timing plan; (80) determining the departing time of single-direction vehicles on the bus trunk line. By adopting the method, the station intervals and positions of the bus trunk line in an urban newly-built area can be well designed, and signal priority at intersections can be given.

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 preferential control technology of planning, design and intersection signal of city's main road axles public transport, relate in particular to a kind of unidirectional preferential method to set up of backbone public transport intersection signal based on optimum bus station spacing.

Background technology

Be accompanied by the rapid growth of Chinese national economy, the rapid raising of the level of urbanization, the scale in city is also increasing, follows this and this traffic problems that occur are also more and more perplexing 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 has also proposed many solutions in order to alleviate traffic problems.First develop the important solution thinking that public transport proposes just under such overall background.

In fact, first developing public transport is the important means of adjusting traffic trip structure, alleviating 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 of alleviating urban transport problems.On the other hand, the feature that China city space is expanded rapidly and city function height gathers and deposits, also determine to have only the public transportation system that promotes energetically Level-of-Services of Public Transit, Erecting and improving, could in meeting city high density compact development, alleviate a contingent traffic congestion difficult problem.At present, at the technical elements of public traffic in priority, the scholar of China has proposed many technology, has mainly comprised in short that public transport time priority, public transport space are preferential, intelligent bus technology etc.Above-mentioned technology is that Development of Urban public transit system, the alleviation city problem of blocking up play a significant role, but for some special situations, still have certain technological gap.

In new planning district or the new district in city, must need new planning or open many public bus networks, person wherein joins the trend, the position of website, bus departure interval, the public transport that relate to public bus network many-sided problems such as car and need to preset.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 owing to lacking and integrating in system level, often cause the public transit system inside in new planning district to have contradiction, particularly existing problems aspect the implementing of public traffic in priority, operational effect is bad.

Summary of the invention

Object of the present invention is in order to solve new planning district, city or new district, new planning or open public bus network Bus stop planning, reconnaissance is set and crossing bus signals is preferential and special proposes.Specifically, this inventive method has relied on existing ripe bus station spacing that technology and public transport intersection signal precedence technique are set, and on this basis, determine the working time of public transit vehicle, the signal time distributing conception of adjustment backbone public transport crossing along the line based on bus station's spacing, well prior art is cascaded, can well solves the preferential problem arranging of city upblic traffic station setting and intersection signal.

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 backbone public transport will be according to the first definite optimum bus station's spacing of the operation characteristic of public bus network, determine the working time of public transit vehicle, the signal time distributing conception of adjustment backbone public transport crossing along the line based on bus station's spacing subsequently, 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 gathering comprises following data: the position, initial station of bus trunk line, terminal position, bus trunk line moves order of classes or grades at school K, departure interval G, the 1st order of classes or grades at school public transport from frequency F at first stop unidirectional every day ₁, the length L of bus trunk line, the bus passenger par a of bus trunk line unit length along the line, each passenger's the mean time consumption w that gets on or off the bus, bus trunk line crossing along the line quantity I, an i crossing are apart from public transport distance S at first stop _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 j along the line section _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 j along the line section _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 collecting in step 10), method described in the national inventing patent " method for setting stop stations of urban bus line " (patent No. is 201010262999.9) of employing Southeast China University application, incur loss through delay per capita minimum principle based on public transit system and calculate the bus stop space D of bus trunk line, and D is defined as to the theoretical optimum station spacing of this bus trunk line.

Step 30) determine bus trunk line website (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, website (not containing the first and last station) quantity that N is bus trunk line, N is greater than 0 integer, and [X] represents X to round up, and wherein X is the decimal that need to round up.

Step 40) determine the initial position of bus trunk line website (containing first and last station);

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

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

To the initial position of each bus station (containing first and last station), check the distance of itself and near crossing, if there is crossing within the scope of its neighbouring 50 meters, 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 adjusted behind the position at all websites (not containing first and last station), finally determining bus trunk line website (not containing first and last station) position.

Step 50) described in check and adjusted behind the position of all websites (containing first and last station), finally determine bus trunk line website (not containing first and last station) position, can determine the distance of n bus trunk line website (not containing first and last station) from bus trunk line initial station by following formula

wherein, D _nbe the distance of n bus trunk line website (not containing first and last station) from bus trunk line initial station, Q _nfor close public transport initial station one side and from n the crossing that bus trunk line website is nearest, this crossing is from bus trunk line distance at first stop, H _nfor away from public transport initial station one side and from n the crossing that bus trunk line website is nearest, this crossing is from bus trunk line distance at first stop.

Step 60) calculate bus trunk line working time;

Bus trunk line can be obtained by following formula at the running time T j in j along the line section wherein, Σ Stop _jfor public transit vehicle is in the berthing time summation of all websites in j section, Σ Stop _j=mawD.Wherein, m is the quantity of j section website.The T.T. of an one way of public transit vehicle operation 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 the each crossing collecting in step 10), adopt Robert Webster method (WEBSTER method) to calculate and determine the initialize signal timing scheme of each crossing, subsequently the signal timing dial cycle duration of all crossings is all unified to increase to maximum signal period duration C, and the time increasing 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 that employing Robert Webster method (WEBSTER method) calculates.

Step 70) the middle final signal timing scheme of revising and determine each crossing, main by adjusting the bus trunk line green light zero hour of each crossing, while making public transport arrive each crossing, the signal of crossing is green light in bus travel direction.Can specifically be illustrated as: the bus trunk line green light of j crossing can be determined by following formula the zero hour wherein, G _{j, transit}be the bus trunk line green light phase place duration of j crossing, f _jfor integer, and f _jneed to meet the requirement of inequality below $-(F_1+\underset{h=1}{\overset{j}{\mathrm{\Σ}}}{T}_h-\frac{1}{2}{G}_{j,\mathrm{transit}}\frac{1}{2})\≤f_{j}C\≤86400-(F_1+\underset{h=1}{\overset{j}{\mathrm{\Σ}}}{T}_h-\frac{1}{2}{G}_{j,\mathrm{transit}}\frac{1}{2}).$

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

The bus trunk line of k order of classes or grades at school is by the frequency F of vehicle that mails at first stop terminal _kcan be obtained by following formula

order of classes or grades at school sequence number that what wherein, k was bus trunk line dispatch a car.

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 to public transport bus priority at intersection aspect to knot and makes certain improvement and innovation, site location design and the intersection signal priority issues that can well solve 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, thereby its fund input is little, less demanding to the finance in city.Particularly, in the newly-built region in city, can directly arrange bus station in conjunction with the construction of urban road, and intersection signal timing scheme is set, the operability of invention is very strong.

Brief description of the drawings

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 backbone public transport will be according to the first definite optimum bus station's spacing of the operation characteristic of public bus network, determine the working time of public transit vehicle, the signal time distributing conception of adjustment backbone public transport crossing along the line based on bus station's spacing subsequently, realize the unidirectional preferential setting of backbone public transport intersection signal.Comprise 8 steps of following steps:

Step 10) gathers bus trunk line service data;

The bus trunk line service data gathering comprises following data: the position, initial station of bus trunk line, terminal position, bus trunk line moves order of classes or grades at school K, departure interval G, the 1st order of classes or grades at school public transport from frequency F at first stop unidirectional every day ₁, the length L of bus trunk line, the bus passenger par a of bus trunk line unit length along the line, each passenger's the mean time consumption w that gets on or off the bus, bus trunk line crossing along the line quantity I, an i crossing are apart from public transport distance S at first stop _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 j along the line section _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 j along the line section _jcan be obtained by following formula

Step 10) is the basic steps of aspect of the present invention: data acquisition, by for follow-up step provides essential data supporting, relevant data can obtain 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 collecting in step 10), method described in the national inventing patent " method for setting stop stations of urban bus line " (patent No. is 201010262999.9) of employing Southeast China University application, incur loss through delay per capita minimum principle based on public transit system and calculate the bus stop space D of bus trunk line, and D is defined as to the theoretical optimum station spacing of this bus trunk line.

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

Step 30) determine bus trunk line website (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, website (not containing the first and last station) quantity that N is bus trunk line, N is greater than 0 integer, and [X] represents X to round up, and wherein X is the decimal that need to round up.

Step 40) determine the initial position of bus trunk line website (containing first and last station);

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

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

To the initial position of each bus station (containing first and last station), check the distance of itself and near crossing, if there is crossing within the scope of its neighbouring 50 meters, 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 adjusted behind the position at all websites (not containing first and last station), finally determining bus trunk line website (not containing first and last station) position.

Step 50) described in check and adjusted behind the position of all websites (containing first and last station), finally determine bus trunk line website (not containing first and last station) position, can determine the distance of n bus trunk line website (not containing first and last station) from bus trunk line initial station by following formula

wherein, D _nbe the distance of n bus trunk line website (not containing first and last station) from bus trunk line initial station, Q _nfor close public transport initial station one side and from n the crossing that bus trunk line website is nearest, this crossing is from bus trunk line distance at first stop, H _nfor away from public transport initial station one side and from n the crossing that bus trunk line website is nearest, this crossing is from bus trunk line distance at first stop.

Step 50) be mainly to arrange not in the coverage of crossing for the position of definite bus station, the stop behavior of entering the station that prevents public transport causes larger impact to crossing, step be should change and will the position of each website and the position of nearest crossing thereof be checked one by one, if distance is between the two less than 50 meters, adjust the position of bus station.By this step, just can finally determine the site location of bus trunk line.

Step 60) calculate bus trunk line working time;

Bus trunk line is in the running time T in j along the line section _jcan be obtained by following formula

wherein, Σ Stop _jfor public transit vehicle is in the berthing time summation of all websites in j section, Σ Stop _j=maD.Wherein, m is the quantity of j section website.The T.T. of an one way of public transit vehicle operation 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 the each crossing collecting in step 10), adopt Robert Webster method (WEBSTER method) to calculate and determine the initialize signal timing scheme of each crossing, subsequently the signal timing dial cycle duration of all crossings is all unified to increase to maximum signal period duration C, and the time increasing 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 that employing Robert Webster method (WEBSTER method) calculates.

In this step, revise and determine the final signal timing scheme of each crossing, main by adjusting the bus trunk line green light zero hour of each crossing, while making public transport arrive each crossing, the signal of crossing is green light in bus travel direction.Can specifically be illustrated as: the bus trunk line green light of j crossing can be determined by following formula the zero hour

wherein, G _{j, transit}be the bus trunk line green light phase place duration of j crossing, f _jfor integer, and f _jneed to meet the requirement of inequality below $-(F_1+\underset{h=1}{\overset{j}{\mathrm{\Σ}}}{T}_h-\frac{1}{2}{G}_{j,\mathrm{transit}}\frac{1}{2})\≤f_{j}C\≤86400-(F_1+\underset{h=1}{\overset{j}{\mathrm{\Σ}}}{T}_h-\frac{1}{2}{G}_{j,\mathrm{transit}}\frac{1}{2}).$

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

The bus trunk line of k order of classes or grades at school is by the frequency F of vehicle that mails at first stop terminal _kcan be obtained by following formula order of classes or grades at school sequence number that what wherein, k was bus trunk line dispatch a car.

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

Attachedly Figure 2 shows that certain city need to arrange the road schematic diagram of 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) as 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	——	——

Gather after bus trunk line service data by step 10), the related data collecting is as following table 2) as shown in:

Table 2) bus trunk line service data

In addition the length L in bus trunk line j along the line section, _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 that adopts bus trunk line crossing along the line vehicle flowrate data acquisition.

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

Determine method by the bus station's distance providing in this step national inventing patent " method for setting stop stations of urban bus line ", obtain being applicable to obtaining the optimum station spacing D=400m of theory of this example bus trunk line.Special needs to be pointed out is, in the time that this step is determined the theoretical optimum station spacing of bus trunk line, need to use the data of not mentioning 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 ", thereby do not provide these data in the present invention.

Step 30) determine bus trunk line website (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 (containing first and last station);

The website of n bus trunk line is apart from the initial distance D' of public transport initial station _ncan obtain D' by following formula _n=nD, thus, can obtain the website of n bus trunk line of this example apart from the initial distance D' of public transport initial station _n, see the following form 3) shown in.

Table 3) initial position of bus trunk line website (containing first and last station)

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

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

To the initial position of each bus station (containing first and last station), check the distance of itself and near crossing, if there is crossing within the scope of its neighbouring 50 meters, 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 adjusted behind the position at all websites (not containing first and last station), finally determining bus trunk line website (not containing first and last station) position.

By this step 50) to this example table 3) in the inspection of position of all websites find, all websites are not all near of crossing, thereby table 3) result be final definite bus trunk line site location.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 j along the line section _jcan be obtained by following formula

wherein, Σ Stop _jfor public transit vehicle is in the berthing time summation of all websites in j section, Σ Stop _j=mawD.Wherein, m is the quantity of j section website.The T.T. of an one way of public transit vehicle operation is

the bus trunk line of this example is in the running time T in j along the line section _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 the each crossing collecting in step 10), adopt Robert Webster method (WEBSTER method) to calculate and determine the initialize signal timing scheme of each crossing, subsequently the signal timing dial cycle duration of all crossings is all unified to increase to maximum signal period duration C, and the time increasing 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 that employing Robert Webster method (WEBSTER method) calculates.

First the data that example collected by this step, can obtain maximum signal period duration C=120s, obtains subsequently the phase place duration of each crossing, 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, main by adjusting the bus trunk line green light zero hour of each crossing, while making public transport arrive each crossing, the signal of crossing is green light in bus travel direction.Can specifically be illustrated as: the bus trunk line green light of j crossing can be determined by following formula the zero hour

wherein, G _{j, transit}be the bus trunk line green light phase place duration of j crossing, f _jfor integer, and f _jneed to meet the requirement of inequality below $-(F_1+\underset{h=1}{\overset{j}{\mathrm{\Σ}}}{T}_h-\frac{1}{2}{G}_{j,\mathrm{transit}}\frac{1}{2})\≤f_{j}C\≤86400-(F_1+\underset{h=1}{\overset{j}{\mathrm{\Σ}}}{T}_h-\frac{1}{2}{G}_{j,\mathrm{transit}}\frac{1}{2}).$

Finally, obtain the bus trunk line green light zero hour of each crossing:

Table 6) each crossing bus trunk line green light zero hour

Crossing sequence number	Bus trunk line green light zero hour	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

Determining after the zero hour of phase place 1 of each crossing, the zero hour of other phase places, the finish time also can be by tables 6) push over and obtain.Same, the zero hour of each phase place in other cycles and the finish time also can obtain by plus-minus cycle C.

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

The bus trunk line of k order of classes or grades at school is by the frequency F of vehicle that mails at first stop terminal _kcan be obtained by following formula

order of classes or grades at school sequence number that what wherein, k was bus trunk line dispatch a car.By calculating, in this example, k order of classes or grades at school bus trunk line is by the frequency F of vehicle that mails at first stop terminal _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, determine the working time of public transit vehicle, the signal time distributing conception of adjustment backbone public transport crossing along the line based on bus station's spacing subsequently, realize the unidirectional preferential setting of backbone public transport intersection signal, specifically comprise following steps:

Step 10) gathers bus trunk line service data;

The bus trunk line service data gathering comprises following data: the position, initial station of bus trunk line, terminal position, bus trunk line move order of classes or grades at school K, departure interval G, the 1st order of classes or grades at school public transport from frequency F at first stop unidirectional every day ₁, the length L of bus trunk line, the bus passenger par a of bus trunk line unit length along the line, each passenger get on or off the bus mean time consumption w, bus trunk line crossing along the line quantity I, an i crossing apart from public transport distance S at first stop _i, each crossing peak hour flow flux and flow direction, bus trunk line along the length L in part of path quantity J, bus trunk line j along the line section _jwith bus trunk line vehicle operating average speed v 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 j along the line section _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 collecting in step 10), incur loss through delay per capita minimum principle based on public transit system and calculate the bus stop space D of bus trunk line, and D is defined as to 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 can be calculated by following formula

wherein, N is greater than 0 integer, and [X] represents X to round up, and wherein X is the decimal that need to round up;

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

The website of n bus trunk line is apart from the initial distance D' of public transport initial station _ncan obtain D' by following formula _n=nD, wherein, the website sequence number that n is described bus trunk line, 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 near crossing, if there is crossing within the scope of its neighbouring 50 meters, 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 adjusted behind the position of all websites, finally determining 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 j along the line section _jcan be obtained by following formula

wherein, Σ Stop _jfor public transit vehicle is in the berthing time summation of all websites in j section, Σ Stop _j=mawD.Wherein, m is the quantity of j section website, and the T.T. of an one way of public transit vehicle operation 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 the each crossing collecting in step 10), adopt Robert Webster method (WEBSTER method) to calculate and determine the initialize signal timing scheme of each crossing, subsequently the signal timing dial cycle duration of all crossings is all unified to increase to maximum signal period duration C, and the time increasing 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 that employing Robert Webster method (WEBSTER method) calculates;

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

The bus trunk line of k order of classes or grades at school is by the frequency F of vehicle that mails at first stop terminal _kcan be obtained by following formula

order of classes or grades at school sequence number that what wherein, k was bus trunk line dispatch a car.

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 adjusted behind the position of all websites, finally determine the position of described bus trunk line website, can determine the distance of n bus trunk line website from bus trunk line initial station by following formula

wherein, D _nbe the distance of n bus trunk line website from bus trunk line initial station, Q _nfor close public transport initial station one side and from n the crossing that bus trunk line website is nearest, this crossing is from bus trunk line distance at first stop, H _nfor away from public transport initial station one side and from n the crossing that bus trunk line website is nearest, this crossing is from bus trunk line distance at first stop.

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) the middle final signal timing scheme of revising and determine each crossing, main by adjusting the bus trunk line green light zero hour of each crossing, while making public transport arrive each crossing, the signal of crossing is green light in bus travel direction.Can specifically be illustrated as: the bus trunk line green light of j crossing can be determined by following formula the zero hour

wherein, G _{j, transit}be the bus trunk line green light phase place duration of j crossing, f _jfor integer, and f _jneed to meet the requirement of inequality below $-(F_1+\underset{h=1}{\overset{j}{\mathrm{\Σ}}}{T}_h-\frac{1}{2}{G}_{j,\mathrm{transit}}\frac{1}{2})\≤f_{j}C\≤86400-(F_1+\underset{h=1}{\overset{j}{\mathrm{\Σ}}}{T}_h-\frac{1}{2}{G}_{j,\mathrm{transit}}\frac{1}{2}).$

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