Separated left turn lane design and related intersection channelization, signal phase and timing setting method

Abstract

The invention discloses a separated left turn lane design and related intersection channelization, signal phase and timing setting method. The method comprises the following steps: step 1, a separated left turn lane selection is adopted in the intersection; step 2, the separated left turn lane is designed; step 3, channelization and signal timing design are carried out on an upstream intersection; and step 4, channelization and signal phase design are carried out on a target intersection. The separated left turn lane design method can improve the passing efficiency at the intersection; compared with the traditional lane design method, the upstream intersection can be used for eliminating conflict between left turn traffic at the target intersection and reverse straight traffic, no new signal lamps need to be added, and the method can be flexibly applied to one or more lanes.

Description

technical field [0001] The invention relates to the field of urban road traffic control, in particular to a separate left-turn lane design and intersection channelization, signal phase and timing setting method for associated intersections. Background technique [0002] The traffic efficiency bottlenecks of urban roads are usually located at signalized intersections. Among all the traffic flows at the intersection, the left-turning traffic flow spends the most time at the intersection due to its slow speed and long distance, and has the greatest impact on the traffic efficiency of the intersection. In order to effectively reduce the decline in intersection efficiency caused by left-turn traffic flow, the way of prohibiting left-turn is usually adopted, but this will cause some vehicles to detour, increasing the average travel time and total traffic pressure. The driving path of left-turning vehicles can be reconfigured through overpasses and other forms to reduce the waitin...

AI Technical Summary

Problems solved by technology

In order to effectively reduce the decline in intersection efficiency caused by left-turning traffic flow, the way of prohibiting left-turning is usually adopted, but this will cause some vehicles to detour, increasing the average travel time and total traffic pressure

The driving path of left-turning vehicles can be reconfigured through overpasses and other forms to reduce the waiting time for red lights, but it will cost a lot and affect the urban landscape

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