Yasunori Muromachi

TRAVEL BEHAVIOR DATA COLLECTED USING GPS AND PHS

This paper describes how travel behavior data collection systems were developed using Global Positioning System (GPS), personal handyphone systems (PHS) (also known as cell phones), and geographic information systems (GIS). It then examines the effectiveness of the data collected by these systems and their applicability to travel behavior surveys.

Analysis of Day-to-Day Variations of Travel Time Using GPS and GIS

This paper presents an analysis of day-to-day variations of travel time on road network using Global Positioning System (GPS) and Geographic Information System (GIS). Data collection system was developed using GPS connected with notebook PC, which can capture vehicle movement of multiple days. One-week vehicle travel surveys using the system were conducted for commuting drivers in local cities. Methods for handling GPS data on GIS platform were summarized, and day-to-day variations of travel time and speed were analyzed in the study area. Although positional data are very promising, usefulness in travel time studies depends on the process of data handling and the quality of GIS database.