Public transport evacuation route planning method based on reversible lane and intersection conflict elimination

Abstract

The invention discloses a public transportation evacuation path planning method based on reversible lanes and intersection conflict resolution. The method specifically includes acquiring road network information within an evacuation area; dividing roads into an evacuation trunk and evacuation branches; constructing a node-arc network model of the evacuation area; based on the arrangement method of reversible lanes, constructing constraint conditions for public transportation flows when the conditions for public transportation flows travel on the evacuation trunk; eliminating cross conflict points of the public transportation flows in different direction at the intersections and constructing constraint conditions for conflict point elimination for the public transportation flows at the intersections; establishing a public transportation evacuation path planning model based on reversible lanes and intersection conflict resolution by taking a target function of making the total traveling distance of all the evacuation crowd to be the minimum; selecting a genetic algorithm for solving the model and obtaining the optimal public transportation evacuation path planning scheme. By adopting the method provided by the invention, delay of public transportation vehicles in road segments and intersections can be reduced substantially, cycle time for evacuation of the public transportation vehicles is shortened and public transportation evacuation efficiency is improved.

Description

technical field [0001] The invention belongs to the field of urban road network optimization, in particular to a bus evacuation path planning method based on reversible lane and intersection conflict elimination. Background technique [0002] In recent years, there have been more and more sudden disasters around the world. All kinds of natural and man-made disasters have seriously threatened the lives and property safety of urban residents and restricted the sustainable development of social economy. In order to deal with various disasters and ensure the safety of life and property of urban residents, people put forward the concept of emergency evacuation. The core issue of emergency evacuation is how to transfer people in the disaster-affected area to a safe place in the fastest and safest way under the limited traffic capacity of road network infrastructure and within a limited safety time frame. [0003] Natural disasters occur frequently in my country, and as a developi...

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Problems solved by technology

[0004] In the actual evacuation situation, due to the limited number, the public transport vehicles need to go back and forth between the evacuation start and end points to evacuate people. If the public transport vehicles are mixed with other social vehicles on the road, there will be a certain driving delay. Parking to give way, there will be parking delays, which will greatly increase the evacuation round-trip time of the bus vehicles, reduce the efficiency of bus evacuation, and there are certain safety hazards

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