Increasing non-response rate have been identified to be one of the most severe risks in travel surveys. In many countries traditional mail and telephone surveys suffer from low response rates. Internet survey can be seen as a means to reduce the non-response rates among the most typical non-response groups in telephone surveys: respondent’s telephone number cannot be found or respondent is not reached by phone. In addition, Internet survey offers many options to improve the response rate and quality of data.
This paper analyzes regional travel diary data collected with mixed modes – Internet survey, telephone interviews and mail survey. The regional travel survey data was collected in Oulu Region in Finland in 2009. Continue reading Conference paper: The role of Internet survey in travel diary surveys