Abstract:

According to the problem of lack of systematic and overall studies on traffic information collection methods based on GPS equipped floating car at present, which leads to a large number of basic data wasted, the low quality output traffic data, the high cost of system etc, the key technologies of traffic information collection based on GPS equipped floating car are put forward, and the functions of the key technologies are indicated, and the key technologies are studied deeply. The key technologies are verified with measured GPS data which collected on the part road network of Changchun, China. The results show that the key technologies and algorithms put forward above have obvious effects for solving problems, which will improve application effects of the road traffic conditions identification and vehicle dynamic navigation systems.

Key words: engineering of communication and transportation system, traffic information collection, floating car, stopping state identifying, map matching