An intuitive realization method of two-way green wave belts at several intersections on main roads

Abstract

The invention discloses a method for realizing a visual main road multiple-intersection bi-directional green wave band. According to the method, through information acquisition of vehicles at related intersections and estimation of parameters the distances between the intersections and the average speed of sections between the intersections, a public period is obtained through calculation, and under the premise that the requirements for the width of the green wave band is met and through the mode that a starting point and a terminal point of the direction phase of a main road are moved up and down or phase combination is changed, finally, phase sequence combination and phase difference of each intersection in the period are obtained so as to increase the width of the green wave band to the maximum extent. According to the method, under the premise that branch road phase green time is less than or equal to main road phase green time Gkey, the width of the green wave band can reach at least sixty seven percent of the green time, and namely the width of the green wave band is equal to the result obtained after sixty seven percent times Gkey. Compared with a traditional graphical method and an algebraic method, a graphical method used by the method is simple and direct, the calculation amount is small, the effect is good, stop frequencies of vehicles on the main road can be reduced to a great extent, oil consumption is lowered, and pollution is reduced.

Description

technical field [0001] The invention belongs to the technical field of traffic control. Background technique [0002] With the continuous increase of the number of urban vehicles, the construction of road infrastructure can not keep up with the speed of the increase of vehicles, especially in big cities, traffic jams occur from time to time, which brings inconvenience to people's daily travel and brings great harm to road facilities. There was mounting pressure. Traffic congestion not only brings irritability to people, but also causes more pollution to the environment when vehicles are waiting. The importance of traffic control is self-evident, and intersection signal light control technology is a very important part of it. The current traffic control is roughly divided into three types: single intersection control, main road control and area control, also known as point control, line control and surface control (or area control). Green wave control technology is the most...

AI Technical Summary

Problems solved by technology

[0003] At present, there are many methods of green wave control technology. There is a control algorithm based on multi-agent traffic green wave. It is verified through experiments that when there are fewer vehicles, the green wave effect can be generated. When there are more vehicles, the evacuation time of vehicles is short and the degree of congestion is reduced, but it is not explained. Green wave bandwidth is an important indicator, and the realization of the agent is relatively complicated

There is also a two-way green wave coordinated control model for general arterial roads established by using the mixed integer linear programming method. Through experimental verification, the bandwidth of the green wave belt is 30% from south to north and 28% from north to south. The green wave obtained by this method The width of the belt is still unsatisfactory, and this kind of traffic control mathematical model involves many variable parameters, and the solution is time-consuming

Using the traditional graphic method, by comparing the calculation of the ideal position of the intersection with the actual position of the intersection, a plan that is closest to the ideal position is found, and a two-way green wave method that allows each entrance to pass through independently is designed. Finally, this method is verified by experiments. Compared with the superiority of the traditional numerical solution method, but the width of the green wave band is not guaranteed

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