抄録
The objective of this research is to develop techniques for travel speed estimation of main roads using GPS and Mobile (mobile phone) data collected from probe vehicles. To this end, a methodology for travel speed estimation need to be developed first and the reliability of the estimated travel speed in terms of accuracy need to be evaluated.
The coordinate of a mobile location means the location of the base station and not that of the actual probe vehicle. Therefore, erroneous coordinates of the mobile location may result in inaccuracies in the estimation of travel speed based on LBS.
The factors determining the reliability of travel speed using LBS are the number of base station, the distance between nearby base stations, the coverage of base station, and the data collection time interval. To estimate a stable travel speed, the base station network should be dense, that is, the base stations should be close together and its coverage should be dense. It needs to collect data for the estimation speed through detailed data collection time and at reasonably long data update time interval.
