Abstract:

According to the problem that differences of running states between floating cars and traffic flow are neglected about traffic information collection technologies based on floating car data, which leads to traffic information obtained with low quality, a method for determining the quantitative relations between link average travel time of traffic flow and link average travel time of floating cars is designed using statistical techniques, and a method for estimating link average travel time of traffic flow is put forward by fusing measured data and historical data, then the methods are verified based on measured floating car data. The results show that the methods mentioned above can produce link average travel time with higher quality, which will provide more reliable decision information for traffic management departments and travelers.

Key words: engineering of communications and transportation, traffic information system, floating car, travel time, traffic flow