Method for dividing signal-timing periods of intersections

Abstract

The invention relates to a method, particularly relates to a method for dividing signal-timing periods of intersections, and belongs to the technical field of road traffic signal control. The technical scheme includes that the method for dividing the signal-timing periods of the intersections comprises steps of a, acquiring required traffic stream data of the intersections and computing intersection flow ratios of the intersections; b, computing the optimal signal cycle durations by the aid of the intersection flow ratios and signal cycle lost time; c, computing timing period dividing thresholds according to the optimal signal cycle durations and dividing a certain period as a timing period when the timing period dividing threshold corresponding to the certain period is matched with a preset period dividing judgment threshold. The method has the advantages of high piecewise fitting precision, simplicity, reliability, practicality and wide application range.

Description

technical field [0001] The invention relates to a method, in particular to a method for dividing signal timing periods at intersections, and belongs to the technical field of road traffic signal control. Background technique [0002] In recent years, with the rapid development of the national economy and the acceleration of the urbanization process, the demand for urban road traffic has increased sharply, people travel frequently, vehicles have increased significantly, and roads have continued to expand. But in contrast, the construction of urban transportation infrastructure is obviously lagging behind, far behind the rapidly growing traffic demand, and the contradiction between the two has become increasingly prominent. Due to the mutual interference between motor vehicles, non-motor vehicles and pedestrians in different directions at intersections, problems such as traffic jams, speed reduction, and traffic accidents are prone to occur. Adjustment through relevant traffi...

AI Technical Summary

Problems solved by technology

[0003] At present, the most common method of intersection signal control is single-point fixed-period signal control. The main method to improve the efficiency of single-point fixed-period signal control is to adopt a multi-period timing scheme. In the past, multi-period timing generally only used peak and flat peak hours When the division of time slots is too simple, the timing scheme designed through this simple division of time slots often leads to the inability to fully utilize the green light time and fail to adapt to changes in traffic volume, causing unnecessary delays and even congestion in some time slots

Therefore, it is very necessary to divide intersections into multi-periods. Most of the common multi-period division methods are based on the historical statistical data of traffic volume at intersections, without considering the traffic volume of different flow directions at each entrance, and the calculation process is complicated, which is not conducive to implementation and Process operation cannot fully meet the needs of dynamic traffic signal timing

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