Abstract
Abstract Travel surveys as well as freight transport surveys are the basis for any fact-based transport policy. It needs to be stressed that the collection of data and description of the existing mobility behaviour and transport demand is linked to a considerable amount of uncertainty. Therefore, it is greatly important to assure the quality of the collection of travel behaviour data. If one considers the current guidelines for planning and surveys, from that point of view, it is amazing how little attention is paid to the disclosure of the data quality and uncertainty directly. Therefore, the standardized definition of requirements to achieve high quality for survey results is essential. This workshop tried to further develop validation procedures in order to come closer to the ground truth in surveys.
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