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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/10569

Title: Assessment of the quality of location data obtained by the GPS-enabled PARROTS survey tool
Authors: KOCHAN, Bruno
WETS, Geert
Issue Date: 2008
Citation: Social Positioning Method (SPM) 2008, Tartu, Estoni - 10/3/2008 - 12/3/2008.
Abstract: A custom tool, PARROTS (PDA system for Activity Registration and Recording of Travel Scheduling) was developed to collect activity-travel diary data and GPS-based location data during trips. This tool is currently deployed in a survey that is carried out on 2,500 households in Flanders (Belgium). To be able to judge the effect of the PARROTS tool on the quality of activity-travel diaries, a paper-and-pencil diary was designed and deployed as well. This paper discusses the impact on data quality of a GPS-enabled PDA data collection tool featuring consistency checks. This impact includes both activity-travel diary data quality and GPS data quality. The quality of the GPS-based location data collection is assessed in terms of both quantity and quality of the obtained GPS logs. Based on the GPS logger activity, a usage profile was obtained and compared to the location data resulting from the survey. The location data quality was obtained using the fraction of GPS logs containing actual location information. Based on the analyses presented above, it is concluded that PARROTS provides both high quality activity-travel diary data and GPS-based location information, while keeping the burden for the respondents at an acceptable level.
Notes: B. Kochan, T. Bellemans, D. Janssens, G. Wets, H.J.P. Timmermans B. Kochan, dr. T. Bellemans, dr. D. Janssens and Prof. dr. G. Wets * are members of the Transportation Research Institute (IMOB), Faculty of Applied Economics, Hasselt University Wetenschapspark 1 bus 13, B-3590 Diepenbeek, Belgium Tel. + 32 11 26 89 20 Fax. + 32 11 23 22 17 {Bruno.Kochan; Tom.Bellemans; Davy.Janssens; Geert.Wets}@UHasselt.be Prof. dr. H.J.P. Timmermans is Professor of Urban Planning at the Eindhoven University of Technology and director of EIRASS P.O. Box 513, Vertigo 8th floor, 5600 MB Eindhoven, The Netherlands Tel. + 31 40 247 39 60 H.J.P.Timmermans@bwk.tue.nl
URI: http://hdl.handle.net/1942/10569
Category: C2
Type: Conference Material
Appears in Collections: Research publications

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