A method for setting the clearing distance of a middle-sized dynamic bus lane

Abstract

The invention discloses a method for setting the clearing distance of a dynamic bus lane in the middle of the road. At a plurality of continuous signal-controlled intersections on an urban trunk road, the current traffic flow, the number of lanes, and the signal timing scheme of each entrance road at each intersection are first input. Length of road segment between intersections. Then calculate the theoretical minimum arrival time of the bus from the current position to the downstream intersections, the theoretical maximum queue length and the theoretical maximum clearing time of each intersection; search each intersection downstream in turn from the current position of the bus, when the theoretical minimum If the arrival time is greater than the theoretical maximum clearing time, the intersection is determined to be the reference intersection. Then consider the actual signal timing scheme to predict the actual arrival time of the bus. When the actual arrival time of a bus at an intersection is less than the maximum clearing time, the first intersection downstream of the intersection is determined to be a key intersection. The distance from the location to the critical intersection is the clearance distance for the dynamic busway.

Description

technical field [0001] The invention belongs to the field of traffic engineering and traffic information engineering and control systems, and relates to the technical field of dynamic utilization of urban road space resources, and more specifically, relates to a method for setting the clearing distance of dynamic bus lanes in mid-road cities. Background technique [0002] With the development of the urbanization process, the demand for transportation is increasing exponentially, and the traffic pressure faced by the city is increasing; the resulting congestion, environmental pollution, and energy issues have attracted much attention. Vigorously developing public transportation has become an important issue for Chinese cities. As a basic policy for traffic development, setting up dynamic bus lanes is an effective means of countering traffic congestion while ensuring bus priority. Compared with static bus lanes, dynamic bus lanes can ensure the priority of buses without openin...

AI Technical Summary

Problems solved by technology

Method ① There is no theoretical basis for setting the clearing distance. Even if the current road section and the next road section where the bus is located are cleared, there is a possibility that other traffic flows cannot be effectively cleared, and the bus priority cannot be effectively guaranteed

Method ② has better adaptability when the traffic flow saturation is small, but when the saturation is high, such as the morning and evening rush hours, due to the long queue length in front of the intersection, there will be bus encounters at multiple intersections or even every intersection. In the case of a red light, the clearing plan will be invalid

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