Abstract—GPS technology is available and is being widely used in various scientific fields. The use of GPS in origin and destination surveys is recent, especially in researches of trips and transport. However, a large number of recent studies indicate that its application is feasible and have a great potential in data collection, especially jointly with a Trip Diary. This study explored the potential of data collection with GPS devices, evaluated the differences between data reported and recorded by GPS. For this, it was determined a methodology for collecting data from a GPS device, free software and a subsequent interview with each participant personally. The application of the research was conducted in the metropolitan region of Porto Alegre, in which participants performed 1,225 steps of trips that allowed comparing the information recorded by the device with those reported by participants. Approximately 62% of trips was considered valid. The comparison between reports of respondents and values recorded by the GPS confirmed a significant discrepancy between the values of distance and time of the trips, a result by the application of an analysis of variance for different modes of transport. Since the data collected for transportation planning is commonly obtained through reports, it is important to understand the limits of such information, especially for the reliability of the results and to develop efficient measures.

Index Terms—origin and destination survey, GPS, trip diary, transportation planning

Cite: Marcelle D. Ribeiro, Ana M. Larrañaga, and Helena B. B. Cybis, "GPS-Recorded and Self-Reported Data in Surveys of Origin and Destination: Analysis of Limitations and Differences," Journal of Traffic and Logistics Engineering, Vol. 2, No. 3, pp. 187-193, September 2014. doi: 10.12720/jtle.2.3.187-193