Traffic capacity estimation method and device of congestion region and data processing equipment

Abstract

The invention provides a traffic capacity estimation method and device of a congestion region and data processing equipment. The method comprises the steps of acquiring historical travelling track data of a plurality of vehicles on a target road; acquiring a road speed distribution matrix according to the historical travelling track data; identifying a bottleneck generation position and bottleneckgeneration time of a traffic bottleneck from the road speed distribution matrix; determining a critical travelling speed and a congestion propagation speed of the congestion region caused by the traffic bottleneck according to the bottleneck generation position and the bottleneck generation time; and performing forecast calculation on a traffic flow basic map according to the critical travellingspeed, the congestion propagation speed, preset congestion vehicle density and a preset smooth travelling speed, and outputting corresponding vehicle flow as traffic capacity of the congestion region.Therefore, the track data which is low in cost and is capable of completely and continuously reflecting a road traffic state is used for estimating the traffic capacity of the congestion region, an estimation result can be more accurate, and reliable reference data is provided for traffic control.

Description

technical field [0001] The present application relates to the technical field of traffic data processing, in particular, to a method, device and data processing equipment for estimating traffic capacity in congested areas. Background technique [0002] With the improvement of people's material living standards, the number of vehicles in the society is getting higher and higher, and the pressure on the transportation network is increasing. Vehicle congestion has become a major problem affecting the operation efficiency of the transportation network. [0003] Due to the high construction cost and the impact of the construction process on traffic, it is difficult to carry out frequent reconstruction or expansion of the traffic network. In this case, alleviating or avoiding traffic congestion through the control of vehicle flow is an important means to improve the operational efficiency of the transportation network. For roads (such as expressways) on which vehicles can only en...

AI Technical Summary

Problems solved by technology

The traffic capacity of the congested area is the maximum traffic flow that can be output when the road is in a congested state. If the traffic volume entering the congested area is greater than the traffic capacity of the congested area, the congestion will aggravate, which may further aggravate the road congestion

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