Method for obtaining road condition information in real time

Abstract

The invention discloses a method for obtaining road condition information in real time, which belongs to the field of intelligent transportation and includes deleting wireless mobile data not meeting the requirements of road condition information calculation, performing path speculation, judging validity of calculation on road chain travel time by the wireless mobile data according to travel paths and classified characteristic value obtained through path speculation, and integrating valid data to obtain road condition information. The method uses the existing wireless communication network control signals for demarcating travel tracks of vehicle-mounted cell phones so as to calculate road condition information. Due to the fact that the wireless positioning technology based on the network makes the best of the existing mobile communication facilities and network resources, all-weather road real-time transportation information collection covering all road nets can be achieved with small investment, and therefore the road condition information calculation technology based on wireless network control signals can meet the requirements of real-time road condition calculation in vast areas.

Description

technical field [0001] The invention relates to the field of intelligent transportation, in particular to a method for real-time acquisition of road condition information based on base station switching positioning data. Background technique [0002] With the development of social economy and transportation, many problems such as reduced road capacity, reduced driving speed, increased traffic delays, increased fuel consumption, and aggravated environmental pollution caused by traffic congestion and traffic accidents have become more and more prominent. Problems of common concern. In recent years, many countries have invested a lot of manpower and material resources in the development of management and control technology for road transportation systems, and are committed to comprehensively using various high-tech to solve road traffic problems systematically. In this case, the Intelligent Transportation System (Intelligent Transportation System, ITS) came into being, and its...

AI Technical Summary

Problems solved by technology

The problem with this collection method is that burying the coil will cause damage to the built roads; the coil damage rate is high and the maintenance cost is high. According to the calculation of the US Department of Transportation, the coil damage rate is about 30%, and it costs about 2 billion to 3 billion a year. US dollars for maintenance; only vehicle speed and flow data at the location can be collected, and travel time of the road section cannot be obtained; coverage is limited, and data can only be collected on road sections where coil facilities have been buried

Due to the inherent problems of these loop coils, the way of using them to collect traffic data is not widely used, and the coverage of intelligent transportation systems in suburban areas and villages is still small

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