Traffic flow distribution method of urban road network
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A technology of urban road network and traffic flow, applied in the field of traffic planning, can solve problems affecting traveler's route selection behavior
Active Publication Date: 2019-10-25
CENT SOUTH UNIV
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However, the release of road network safety information will affect the route selection behavior of travelers, thus forming a new flow balance state in the entire urban road network.
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Embodiment 1
[0066] The technical scheme adopted in the present invention is a method for distributing traffic flow in an urban road network, comprising the following steps:
[0067] Step 101: Survey residents' travel safety considerations in road selection behavior, and obtain the survey results of travelers' safety considerations in road selection behavior;
[0068] Step 102: Investigate the safety performance of the urban road network, and obtain the safety performance data of each section of the urban road network;
[0069] Step 103: Calculating parameters of the safe route selection model to obtain parameter values in the model;
[0070] Step 104: Using the safe road selection model, distribute the road network flow, and obtain the traffic flow of each road section under a balanced state.
[0071] Preferably, the resident trip safety consideration road selection behavior investigation in step 101 further includes the following steps:
[0072] S1: Sampling the survey objects, where...
Embodiment 2
[0109] Step 101: Survey on residents' travel safety considerations and road selection behavior
[0110] (1) Investigation method. In this embodiment, the home visit survey method is adopted to conduct sample home visits to households within the scope of the surveyed city. Among them, the sampling rate can be obtained according to the urban population in the survey area, and can be obtained from query table 1. The sampling survey adopts the stratified sampling method, and the implementation steps are as follows:
[0111] According to the existing urban traffic area division data, the traffic area is divided into several types (levels) based on the characteristics of the land use of the traffic area;
[0112] For traffic districts with the same nature, the sample size of each stratum is determined by the population of the district × sampling rate;
[0113] Random sampling home visits were conducted, and the investigators learned about the travel safety-efficiency consideratio...
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Abstract
The invention discloses a traffic flow distribution method of an urban road network. The method comprises: step one, carrying out road selection behavior investigation of citizen travelling safety consideration and acquiring a traveler safety consideration road selection behavior investigation result; step two, carrying out urban road network safety performance investigation and acquiring safety performance data of all sections of the urban road network; step three, calculating safety road selection model parameters and acquiring parameter values in the model; and step four, with the safety road selection model, allocating a road network flow and acquiring traffic flows of all sections in a balancing state. According to the invention, a traffic allocation model is constructed by starting with the safety road selection behavior of the traveler, so that the road network traffic flow can be allocated accurately while the traveler considers the road safety factor and the efficiency factorsimultaneously and thus defects of considering the traveler safety consideration road selection behavior of the traditional traffic allocation method are overcome.
Description
technical field [0001] The invention relates to the technical field of traffic planning, in particular to a method for allocating traffic flow in an urban road network. Background technique [0002] The rapid development and widespread popularization of intelligent transportation systems provide a new way to improve traffic safety. Publishing traffic safety status information through the travel information system can provide travelers with a safer travel path, which can effectively improve travel safety. However, the release of road network safety information will affect the route selection behavior of travelers, thus forming a new traffic balance state for the entire urban road network. Therefore, it is proposed to provide a method that, on the basis of known traveler’s route selection behavior based on efficiency considerations, can reasonably quantify traveler’s consideration behavior for route safety at the same time, and based on urban residents’ travel data and urban ...
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