Abstract
The authors have been developing next generation road service technologies using the Dedicated Short Range Communication (DSRC) Road-to-Vehicle Communication System. Prior research included the use of roadside units installed on urban expressways and center equipment to perform probe data accumulation experiments, confirming that a DSRC Road-to-Vehicle Communication System can obtain probe data. Trends in the use of DSRC probe data, presuming latent hazardous locations and calculating CO2 emissions for example, have been shown. This paper reports on the results of practical studies conducted based on the results of prior studies to prepare for the full-scale operation of next generation road services using DSRC probe data.