Signalized intersection delay measuring method based on bisection detector

Abstract

The invention relates to a signalized intersection delay measuring method based on a bisection detector, comprising the following specific steps of: obtaining the time when a first vehicle stops at an intersection in a signal period and the vehicle information of vehicles driving away from a stop line in a green light period from detection data at the stop line after one signal period is finished; reckoning the two approximate times the first vehicle and a last vehicle pass through an upstream detector at an entrance passage according to the stopping time of the first vehicle and the time the last vehicle passes through the stop line and the running time of the free stream; screening out the vehicle information data within the time range, the time ends of which are the two approximate times; and selecting reasonable data as the paired time of the vehicle, which drives away in the period, when passing through a remote end detection section according to driveways and vehicle type information. The difference value of the running time of each vehicle in two sections and the running time of the free stream is the delay of the vehicle at the intersection. The invention has the advantages of simple and convenient calculation, good real time performance, high fault tolerance on the detection data and the like.

Description

technical field [0001] The invention belongs to the field of traffic signal control, in particular to a method for measuring delay at signalized intersections based on a double-section detector. Background technique [0002] Intersections are the throats of urban road traffic. The quality of traffic at intersections directly affects the quality of traffic travel, and delay is an important parameter for evaluating the service level of signal-controlled intersections and optimizing signal timing schemes. Therefore, delays are important for traffic Both design and traffic evaluation are critical. [0003] The so-called delay refers to the indicator of the vehicle being blocked at the signalized intersection and the loss of travel time, which directly reflects the time loss of motor vehicle travelers crossing the intersection. Yet delay is also a parameter that is hard to come by. There are two main classifications of traditional delay acquisition methods: theoretical model ca...

AI Technical Summary

Problems solved by technology

The single-section method places the detector at the stop line of the intersection entrance road or upstream of the entrance road. Its problem is that it needs to assume that the vehicle arrives or leaves according to a certain pattern, which may not match the actual situation of the vehicle and cause delays in the measurement. error

The disadvantage of this method is that once a detection error occur

Images