New Evidence on Nonresponse in Household Travel Surveys

Decline in response rates has increased awareness in the research community for the necessity of more detailed nonresponse analyses. This paper presents results of a follow-up study to the cross-sectional household travel survey, “Mobility in Cities – SrV 2018”. This nonresponse survey covered socio-demographic, travel-related, and trip-related information of 3,108 individuals distributed across the 112 municipalities of the main survey. Response-propensity models were developed which examine drop-out mechanisms and participation probabilities. Education was identified as an explanatory variable; however, there are no indications that this played a factor in weighting for improving the representativeness of reporting-day-specific travel patterns.