Intersection signal transition scheme generation method and device

Abstract

The invention provides an intersection signal transition scheme generation method and device, and the method comprises the steps: selecting an emergency strategy according to a passing moment and an original phase scheme, wherein the original phase scheme comprises an original phase; generating a phase adjustment scheme according to the emergency strategy, wherein the phase adjustment scheme comprises phase adjustment, the phase adjustment comprises a gain adjustment phase and a loss adjustment phase, the phase duration of the gain adjustment phase is greater than or equal to the phase duration of the original phase, and the phase duration of the loss adjustment phase is less than the phase duration of the original phase; calculating a phase duration difference between the loss adjustment phase and the original phase; according to the phase duration difference and the traffic flow information, calculating the vehicle retention number, and according to the vehicle retention number and the saturation flow rate, calculating the first duration for clearing the retention vehicles; calculating a second duration according to the phase duration of the gain adjustment phase and the traffic flow information; and generating a transition scheme and a transition period number according to the first duration and the second duration. According to the invention, congestion after emergency vehicles pass through the intersection is avoided or relieved.

Description

technical field [0001] The invention relates to the technical field of traffic signal coordination control, in particular to a method and device for generating an intersection signal transition scheme. Background technique [0002] Emergency vehicles such as ambulances and fire engines have high requirements on traffic efficiency. In order to allow them to pass through intersections faster, the traffic control department often grants emergency vehicles the absolute right of way. In order to realize the absolute right of way of emergency vehicles, the intersection intelligent signal controller adjusts the signal control scheme to make the emergency vehicles green all the way, reducing their time delay at the intersection. [0003] After the emergency vehicles pass through the intersection, if the signal control machine directly restores the normal signal control scheme, there will often be vehicles in one or more phases that cannot be queuing up. If the intersection is in a ...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a method and device for generating a signal transition scheme at an intersection, aiming at solving the technical problem in the prior art that the intersection signal is blocked due to emergency vehicles passing first

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