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Method for determining number and type of vehicles in variable route bus configuration

A technology for the number of vehicles and routes, which is applied in the field of determining the number and types of vehicles configured on variable routes, which can solve problems such as stopovers and limited single vehicles, and achieve the effect of reducing operating costs and reducing empty mileage

Active Publication Date: 2019-09-17
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there is no variable-route operation in China, so the research on variable-route public transport is still only a theoretical research. When conducting vehicle scheduling research, it is still limited to a single vehicle

Method used

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  • Method for determining number and type of vehicles in variable route bus configuration
  • Method for determining number and type of vehicles in variable route bus configuration
  • Method for determining number and type of vehicles in variable route bus configuration

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Embodiment 1

[0040] Embodiment 1: Since the variable-route bus has not yet operated in China, the domestic research on this aspect is limited to theoretical research. For the operation of variable-line buses, some operating environment assumptions should be made in advance:

[0041] aAssume that the demand for appointment can be satisfied by the vehicles of this shift, that is, the rejection rate is 0.

[0042] b The running speed of the public transport vehicle adopts the average speed v.

[0043] c Passenger waiting time T w Since the multi-vehicle system involves the departure interval of vehicles, the waiting time is redefined as half of the departure interval H.

[0044] d The maximum allowable reverse travel distance of the vehicle is 0km.

[0045] e Neglecting the influence of the road network on the driving route of the vehicle, the service area is as follows figure 1 As shown, it is a certain rectangle whose length is L and width is W. The road network in the service area is ...

Embodiment 2

[0046] Embodiment 2: describe in detail some parameters in this method:

[0047] a The expected value of the vertical distance y=W / 4 between a fixed site and its front / rear adjacent demand-corresponding sites, the expected value of the vertical distance between adjacent demand sites y′=W / 3, W is figure 1 The width of the vehicle's rectangular service area.

[0048] b Assume that the required dwell time of a passenger in the variable route bus service is 18s, and the dwell time at the control station is 2min. i.e. T S =18s,T N = 2 min.

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PUM

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Abstract

The invention provides a method for determining the number and type of vehicles in variable route bus configuration. The method comprises the steps of: firstly performing statistics on the numbers of passengers at fixed stations, the numbers of respective demands of four types of passengers, required getting on and getting off points accepting the service, a straight-line distance between the starting station and the ending station of a service area, and getting on and getting off times of the passengers at the fixed stations; then calculating the number of flexible stations according to the numbers of respective demands of four types of passengers of a variable route bus; calculating an expected value of a driving mileage of the variable route bus, and a one-way running time of the variable route bus; establishing a model of an optimal departure interval with the goal of an optimal weighted sum of a passenger travel cost and an enterprise operation cost, and solving an optimal departure interval by using a designed algorithm; and finally figuring out the number of vehicles of the variable route bus according to a one-way running period and the optimal departure interval, wherein the optimal vehicle type of the shift is determined according to the maximum passenger flow section during the one-way running.

Description

technical field [0001] The invention belongs to the technical field of traffic operation and scheduling, and in particular relates to a method for determining the number and types of vehicles allocated to public transport on variable lines. Background technique [0002] The variable route bus can be described as: the vehicle runs along the established reference route in a certain service area, and departs from the reference route according to the needs of passengers within the slack time, and stops at the place required by passengers—the stop outside the station Get on (or get off). There are several fixed stations arranged on the line. Only when the vehicle meets the constraints of the departure time of the fixed station, can the vehicle deviate according to the actual situation and need to return to the reference line to continue driving. [0003] At present, there is no variable-route operation in China, so the research on variable-route public transport is still only a ...

Claims

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Application Information

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IPC IPC(8): G08G1/123
CPCG08G1/123
Inventor 李文权王国庆
Owner SOUTHEAST UNIV
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