Abstract:

Aiming at the shortcoming of the current methods of estimation of individual floating vehicle travel-time on roadsection, a new method based on the global positioning system(GPS) data and analysis of vehicle running characteristics was proposed. The vehicle travel-time estimation was improved in three respects. In the map matching module, the GPS point near the mode was matched jointly by the adjacent point GPS data to improve the map matching efficiency. Aiming at the different running characteristics of the floating vehicle across the road-section boundary point under different situations the time of vehicle passing the boundary point was processed correspondingly to raise the estimation accuracy of the boundary point passing time. The phenomenon of individual vehicle temporary stop by interference was analyzed and the interferential stop was removed effectively, and the effect of the individual vehicle behavior on the accuracy of estimation result was reduced. The method was verified by the experimental taxi GPS data and the result was encouraging.

Key words: engineering of communications and transportation system, individual vehicle travel-time on road-section, global positioning system(GPS), map matching, road-section boundary point