Signal intersection single vehicle stopping delay time estimating method and system based on GPS data

Abstract

The invention discloses a signal intersection single vehicle stopping delay time estimating method based on GPS data. The method comprises steps that: firstly, vehicle GPS data of vehicles at a signal intersection is firstly acquired; secondly, whether the vehicles are in a saturated state is determined according to stopping positions; single vehicle stopping delay time calculating models in saturated and unsaturated states are respectively established; and single vehicle stopping delay time in the saturated and unsaturated states is acquired. The method utilizes the linear relations between the signal intersection single vehicle stopping delay time and the stopping positions, on the basis of considering about pollution to delay data caused by GPS data abnormality and accidental vehicle stopping, the relation models between the single vehicle stopping delay time and the stopping positions in unsaturated and over-saturated states are respectively established by utilizing the robust regression thought and employing least trimmed squares LTS regression to estimate stopping delay time of single vehicles at the signal intersection; tracking and positioning for the single vehicles are realized, and the method has strong timeliness.

Description

technical field [0001] The present invention relates to the field of highway traffic detection, and specifically relates to an estimation method for estimating the parking delay time of a single vehicle at a signalized intersection, which establishes a corresponding model through GPS data to estimate the parking delay time of the single vehicle before parking. Background technique [0002] Vehicles passing through signalized intersections usually experience a certain amount of delay. Effectively estimating the delay time of vehicles passing through signalized intersections is helpful to the actual work of bus arrival time prediction, traffic management, and bus scheduling. [0003] However, due to the limitations of detection methods and technical conditions, there is still a lack of analytical methods for the single-vehicle parking delay time model at signalized intersections with strong operability. Therefore, there is an urgent need for a method for estimating the delay t...

AI Technical Summary

Problems solved by technology

[0003] However, due to the limitations of detection methods and technical conditions, there is still a lack of analytical methods for the single-vehicle parking delay time model at signalized intersections.

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