Traffic security early warning method of traffic control system on highway

Abstract

The invention relates to a traffic security early warning method of a traffic control system on a highway; vehicle detectors are arranged on the highway; the vehicle detectors of all the vehicles are connected with computers so as to lead the computers to obtain output data of the vehicle detectors periodically and establish a data storage list of the vehicle detectors and a security early warning proposal list. After receiving an information packet, the data in the security early warning proposal list is removed; the data storage list of the vehicle detectors is updated according to the content of the received information packet; all data units in the data storage list of the vehicle detectors are searched one by one; key up stream and downstream vehicle detectors meeting the condition are determined; the time and position of possible occurrence of traffic accidents are calculated according the current collected data of the key stream and downstream vehicle detectors and writing the time and the position are written into the security early warning proposal list; if the security early warning proposal list does not have data in the period, the security early warning is not released; or early warning is released to the highway management department according to the time and the position of possible occurrence of traffic accidents in the security early warning proposal list; therefore, periodic and cycle early warning is executed.

Description

Technical field: [0001] The invention relates to a traffic safety pre-warning method applied in an expressway traffic control system, which is used to predict the time and place where a traffic accident on the expressway may break out, so as to send an alarm to the expressway traffic management and control center in advance before the accident occurs. Effect. Background technique: [0002] In the modern highway traffic management, vehicle detectors all over the highway have been used as traffic detection means, which are widely used in the detection of highway traffic flow and traffic congestion. [0003] At present, the highway traffic management and control systems widely used at home and abroad all have the function of detecting the speed and flow of traffic flow at a specific road section through vehicle detectors, and based on this, judge the traffic conditions on the road section, and timely discover the location of traffic incidents. The control center issues a traff...

AI Technical Summary

Problems solved by technology

[0004] Existing expressway traffic incident detection systems and detection methods can only use the data detected by vehicle detectors to detect traffic incidents that have occurred in time, and cannot predict the time and place where traffic accidents may occur in the future

The existing traffic safety early warning system is mainly designed for vehicle drivers, and is usually integrated in the vehicle equipment. It notifies the driver whether there is a traffic safety hazard through the analysis of the current driving conditions and driving environment, but cannot provide expressway management and control. The role of the department in providing traffic safety early warning

The existing traffic accident prediction methods are mainly based on local historical traffic accident data to predict the development trend of future traffic accidents, and cannot accurately predict the possible outbreak time and location of future traffic accidents, and are not suitable for online real-time expressway traffic accident early warning.

[0005] After long-term research by the inventor, it has been found that highway traffic accidents mainly occur when the unstable traffic flow with relatively high operating speed in the upstream encounters the decelerating traffic wave from the downstream. If the distance is too small, the driver has no time to respond to the deceleration of the vehicle ahead, resulting in traffic accidents such as rear-end collisions and scratches

Images