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Le potentiel du web pour les enquêtes de mobilité urbaine

Abstract : Response rates for household travel surveys are tending to fall, and it seems unlikely that this trend will be reversed in the future. In recent years, travel data collection methods have evolved in order to obtain reliable data that are sufficiently detailed to feed increasingly complex models, and in order to integrate new technologies into survey protocols (Internet, GPS...). Combining different media is an obvious low-cost way of improving data quality as it increases the overall response rate. But the question of the comparability of data over time and between different survey modes remains unresolved. We initiated a project of a web survey in parallel of the household travel survey conducted in face to face in Lyon in 2006. The idea is to propose to those households who refuse to respond or are not contactable after a certain number of attempts to respond by the web. The two main objectives of this research are to test the feasibility of a web survey for non-respondents and compare mobility results of both survey modes. Our analysis shows that the Internet respondents travelled less than the face-to-face respondents (3.00 vs 3.63 daily trips), and that the differences between the two groups varied according to the travel mode and trip purpose. While part of this difference can be explained by socioeconomic disparities (the Internet respondents had a specific profile) we cannot exclude the possibility of under-reporting due to the web medium. To take analysis further, it is necessary to apply econometric techniques. The sample selection model, whose parameters must be estimated using the two-stage procedure developed by Heckman, provide a promising avenue as, for example, it allows us to isolate the effect on daily travel of socio-economic differences from that of survey mode.
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Submitted on : Friday, April 30, 2010 - 3:52:18 PM
Last modification on : Friday, October 23, 2020 - 4:33:57 PM
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  • HAL Id : tel-00477745, version 1



Caroline Bayart. Le potentiel du web pour les enquêtes de mobilité urbaine. Economies et finances. Université Lumière - Lyon II, 2009. Français. ⟨tel-00477745⟩



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