Vehicle video recognition-based hybrid main line toll station traffic conflict evaluation method

Abstract

The invention discloses a vehicle video recognition-based hybrid main line toll station traffic conflict evaluation method. The method includes the following steps that: 1, cameras are arranged the toll station square of a toll station to acquire the driving video of vehicles in the toll station square; 2, vehicle identification and tracking are performed in the acquired driving video of the vehicles, the position coordinates of the vehicles in each frame of image are obtained; 3, the data of M frames of images of the vehicles are utilized to calculate the speeds V

i and deceleration indexes DR

i of the vehicles in each frame of image; if a vehicle-following conflict occurs, the time index TTCk of a vehicle-following model is calculated, and if a lane change conflict occurs, the time index Tpet of a vehicle steering model is calculated; and 5, peering processing is performed on the DR

i, TTCk and Tpet, so that the DR

i, TTCk and Tpet can be unified into traffic conflict evaluation indexes STC, and the severity degree of the traffic conflict is judged according to the values of the traffic conflict evaluation indexes STC. With the method adopted, the severity degree of the traffic conflict of the toll station can be quantified. The method has a great application value in decision making such as toll station road safety evaluation, management operation and road traffic flow guidance.

Description

technical field [0001] The invention belongs to the technical field of expressway management, and in particular relates to a traffic conflict evaluation method of a toll station. Background technique [0002] With the rapid development of China's economy in recent years, the mileage of expressways is also increasing. As the "throat" zone of the expressway, the toll station determines the traffic capacity and service level of the road section near the toll station or even the entire road section. As the traffic volume increases year by year, the traffic load borne by the toll stations on the main line is also increasing. Most of the toll stations in our country adopt the combination of non-stop automatic toll collection and parking semi-automatic toll collection. Although it alleviates the congestion problem at the toll booth to a certain extent, it may also cause accident hazards. [0003] With the development of traffic analysis technology, the theory of traffic conflict...

AI Technical Summary

Problems solved by technology

Although it alleviates the congestion problem at toll booths to a certain extent, it may also cause accident hazards

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