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Mixed user travel inducing method considering air pollution exposure

A technology for air pollution and users, applied in data processing applications, traffic control systems for road vehicles, instruments, etc., can solve problems such as not taking into account air pollution exposure, short travel time, etc.

Active Publication Date: 2018-08-10
SOUTHWEST JIAOTONG UNIV
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AI Technical Summary

Problems solved by technology

However, the current traffic guidance methods aim at the shortest travel time and do not take into account the exposure to air pollution

Method used

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  • Mixed user travel inducing method considering air pollution exposure
  • Mixed user travel inducing method considering air pollution exposure
  • Mixed user travel inducing method considering air pollution exposure

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Embodiment Construction

[0092] The present invention will be further described below in conjunction with the accompanying drawings.

[0093] Technical scheme of the present invention is as follows:

[0094] A hybrid user travel induction method that considers air pollution exposure, including

[0095] Step 1: Select the road network and determine the OD pairs and traffic demand in the road network;

[0096] Step 2: Establish an integrated air pollution exposure calculation model, including:

[0097] Exhaust emission prediction model based on BPR function:

[0098]

[0099]

[0100] Among them, q a (v a ) is the CO emission rate on road section a, v a is the flow rate on road section a, l a is the length of section a, t a (v a ) is the travel time on road segment a, is the free travel time of the road section, α and β are model parameters, α=0.15, β=4; c a is the traffic capacity of the road section;

[0101] Gaussian Misty Rain Model:

[0102]

[0103] Among them, C e (x s ,y ...

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Abstract

The invention provides a mixed user travel inducing method considering air pollution exposure, and based on individual optimal users (UE) considering individual optimal travel time, individual optimalusers (EUE) considering individual travel health and Nash Equilibrium users (ECN) considering travel health in a traffic network, a macro traffic flow model based on a Bureau of Public Road (BPR) function is adopted, a macro vehicle exhaust emission estimation model and a Gaussian misty rain model are adopted form an integrated model to describe the whole process of vehicle exhaust from generation, diffusion to final action on humans. Then travel time cost in a road network and influence of air pollution on humans are estimated and are provided to travelers by publishing means such as a variable information board, a mobile phone client and a mobile device, thereby guiding mixed users in the road network to make a reasonable path choice. The mixed user travel inducing method considering air pollution exposure provided by the invention plays an important role in managing and relieving traffic congestion and exhaust pollution by traffic organizations, and the influence of air pollution on the travelers can be reduced.

Description

technical field [0001] The invention relates to the field of traffic planning and management, in particular to a travel induction method for mixed users considering air pollution exposure. Background technique [0002] In recent years, my country's air pollution problem has become more prominent, and it has received extensive attention from governments at all levels, media and society, including neighboring countries. Traffic emissions are one of the main causes of urban air pollution in my country. Taking Beijing, Tianjin and Hebei as an example, the contribution of motor vehicle exhaust to PM2.5 is 31.1%, 20.0% and 25.0% respectively. Prolonged exposure to polluted air can lead to several short-term and long-term diseases. According to the US Environmental Protection Agency, people who live near crowded cities have a lifetime risk of developing cancer of more than 1 in 10,000, which is about 10 times the average level. On the one hand, traffic activities produce vehicle...

Claims

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Application Information

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IPC IPC(8): G08G1/0967G06Q10/04
CPCG06Q10/04G08G1/0967
Inventor 马睿孙湛博谭宇
Owner SOUTHWEST JIAOTONG UNIV
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