Method and system for acquiring cargo transport lane traffic capacity of passenger and cargo separating expressway

Abstract

The invention provides a method and a system for acquiring the cargo transport lane traffic capacity of a passenger and cargo separating expressway. The method is characterized by comprising the steps of acquiring traffic information data of a section of an expressway cargo transport lane; calculating the axle number of each vehicle in the traffic information data, and selecting a type of vehicles with the axle number occupying the highest proportion as a standard vehicle; clustering all of the vehicles in the traffic information data according to a power-to-weight ratio and overall dimensions, and classifying the vehicles in the traffic information data into M categories according to vehicle types on the basis of a clustering result, wherein the power-to-weight ratio and the overall dimensions of the standard vehicle fall into a certain category of the M categories; acquiring an equivalent convert coefficient of each vehicle type relative to the standard vehicle at a non-car-following state and a car-following state, wherein the equivalent covert coefficient of the vehicle type to which the standard vehicle belongs relative to the standard vehicle is 1; and acquiring the traffic capacity of the section of the expressway cargo transport lane at the non-car-following state and the car-following state under conditions of any vehicle type mixing ratio by being combined with a traffic capacity calculation model according to the equivalent covert coefficients.

Description

technical field [0001] The invention relates to the field of expressway traffic capacity determination, in particular to a method and system for obtaining the traffic capacity of a freight lane on a passenger-cargo separated expressway. Background technique [0002] Traffic capacity refers to the maximum number of vehicles that can pass per unit time on a certain road section under certain road, traffic, control and environmental conditions, corresponding to a certain service level. The traffic capacity reflects the traffic load capacity that the road can bear. Highway traffic capacity is the basic parameter for highway network planning, highway design, traffic operation management, project feasibility study and post-evaluation of highway construction projects. At present, whether domestic or foreign scholars, their research results on traffic capacity are all based on the traffic characteristics of car traffic, that is, the determined lane capacity is based on passenger ca...

AI Technical Summary

Problems solved by technology

The freight lanes of passenger-freight separated highways have their own particularities in terms of traffic capacity and operation organization methods, mainly as follows: the driving vehicles are all trucks. The traffic capacity of highway freight lanes, the results obtained have large errors

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