On-ramp signal control method of urban expressway based on real-time video information

Abstract

The invention provides an urban expressway entrance ramp signal control method based on real-time video information, and obtains the real-time traffic flow data of the entrance ramp and the ramp vehicle queuing length through a video detector arranged on the main line at the intersection area of ​​the entrance ramp and the main line; according to the core control The algorithm calculates the optimal adjustment rate of the current on-ramp, and performs collaborative optimization on core parameters such as the video data acquisition period and the on-ramp signal control period according to the optimization control target, thereby calculating the on-ramp signal light period and signal control scheme. The present invention optimizes the signal control on the entrance ramp based on real-time video traffic information, has faster response speed and shorter response time, can more effectively prevent the occurrence of traffic capacity decline in expressway intersection areas, avoid traffic congestion, and realize Maximize the traffic efficiency of the expressway main line. Its control method is easy to implement, has a wide range of applications and good application prospects.

Description

technical field [0001] The invention belongs to the technical field of traffic control and intelligent traffic, and in particular relates to a signal control method for an urban expressway entrance ramp based on real-time video information. Background technique [0002] With the rapid development of social economy and the continuous acceleration of the urbanization process, the economic and cultural activities of urban residents have become increasingly frequent, the number of motor vehicles has increased sharply, and the demand for urban transportation has increased rapidly. However, the construction speed of urban expressways is far behind the growth rate of motor vehicles, and the level of traffic management lags behind the growth of traffic demand, which can no longer meet the existing demand. Urban traffic congestion has become one of the increasingly prominent social problems. In the interweaving area of ​​urban expressway ramps, due to the frequent lane-changing behav...

AI Technical Summary

Problems solved by technology

However, the construction speed of urban expressways is far behind the growth rate of motor vehicles, and the level of traffic management lags behind the growth of traffic demand, which can no longer meet the existing demand. Urban traffic congestion has become one of the increasingly prominent social problems

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