OBU-Based Detection Method of Expressway Road Network Operation Status

Abstract

a based on OBU The method for detecting the running state of the expressway road network, which adopts the toll station ETC Lane OBU detectors and roadside OBU The detector obtains the traffic flow speed of the road segment, the road network operation index, and the estimated travel time between road segments, and informs the vehicle. The detection method of the present invention will charge station ETC Lane OBU Detector data and roadside OBU The combination of the data from the detector improves the accuracy of the real-time traffic operation status detection results of the expressway network and the reliability of the travel time estimation between toll stations, thereby improving the supervision ability and service level of the traffic management department.

Description

technical field [0001] The invention relates to a method for detecting the running state of a highway network, in particular to an OBU-based method for detecting the running state of a highway network. Background technique [0002] Since 2005, my country has organized the research and application of key technologies for non-stop toll collection services on national highways. By 2013, the unified standard non-stop toll collection system (also known as electronic toll collection system, ETC: ElectronicTollCollection) has covered 26 provinces and cities, with users reaching More than 6 million. [0003] The user's OBU is an information carrier with a unique identification code. In terms of OBU application, Patent Document 1 (CN202523116U) discloses a mobile network-based non-stop highway driving path recording system, which detects the OBU module through the RSU module and sends It reads the information in the temporary path information table, that is, the number of the mobile ...

AI Technical Summary

Problems solved by technology

However, this method only uses roadside detection to achieve statistical analysis of road network status, which can only reflect the traffic operation status of the road section between two DSRC information collection points in a trip, and cannot reflect the deceleration through the entrance, ramp travel time, and clock synchronization. Therefore, it cannot fully and reliably reflect the real operation of the expressway network, nor can it provide expressway travelers with a reliable estimate of the travel time between two toll stations, so that it cannot effectively improve the expressway of the traffic management department. Highway Network Operation Supervision Capability and Service Level

[0006] It can be seen that traditional traffic detectors (coils, microwaves, ultrasonic waves) can only detect cross-section traffic flow parameters (such as traffic volume, cross-section speed, etc.). Traffic flow speed, average travel time of road sections, road network congestion, and road network operating status cannot be obtained directly. It requires dense detectors and complex calculations to obtain them, and the accuracy is poor.

Although the roadside OBU detector has the advantages of low cost, convenient installation (it can be installed on the mast or roadside), requires a small Driving time, road network congestion, and road network operating status cannot avoid the influence of untrustworthy data caused by speeding and parking of individual vehicles

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