Traffic jam time calculation method for transition road segment

Abstract

The invention belongs to the technical field of urban transportation informatization, and particularly relates to a traffic jam time calculation method for a transition road segment. The method comprises the following steps that 1, a radar detector is installed and debugged; 2, the section flow of the upstream segment and the section flow of the downstream segment are acquired; 3, the traffic capacity of the transition road segment is calculated; 4, the queuing duration time is calculated; 5, the queuing dispersing time is calculated; 6, the traffic jam time is calculated. By means of the method, a traffic commanding center can remind a driver to reasonably set the car speed or reselect a travel route in advance, and then the maximum traffic capacity of the transition road segment is achieved on the premise that safe operation of the transition road segment is guaranteed. Even different emergency measures can be taken according to the different traffic jam times, so that reliable running of a whole traffic system in daily operation is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of urban traffic informatization, and in particular relates to a traffic jam time calculation method for a transition road section. Background technique [0002] With the rapid development of social economy, the continuous growth of population and the gradual improvement of people's living standards, the number of motor vehicles in my country is also increasing at an unprecedented speed. The huge number of motor vehicles makes urban roads and their traffic facilities overwhelmed, and local or even large-scale traffic jams often occur. From the perspective of the space where traffic congestion occurs, urban road traffic congestion often starts from a certain intersection in the road network. The queuing tends to spread further upstream and even extend to the upstream intersection, and vehicle queuing overflow may occur. The above-mentioned congestion phenomenon is especially frequent at the transition secti...

AI Technical Summary

Problems solved by technology

The unified speed limit or the fixed installation of speed limit signs not only greatly reduces the operating efficiency of the original viaduct that should operate efficiently, but also makes it easier for the vehicle in front to see the speed limit sign and suddenly slow down, which in turn causes rear-end collisions, etc. problems, resulting in driving safety can not be effectively guaranteed

Using video surveillance to timely judge the traffic congestion of urban roads has many shortcomings such as low early warning efficiency, poor accuracy, and even no early warning.

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