Key points are not available for this paper at this time.
The purpose of this article is to provide an overview of the trends in the Norwegian National Travel Surveys (NNTS) concerning quality. The analysis is based on a document analysis of NNTS documentation and quantitative analysis of 2016–2019 data. The quality of the NNTS has declined significantly over recent years. Probable causes are non-response due to refusal, underreporting of trips and geographical bias. The current approach does not provide a data that reflects the real travel behavior of the population. In the future, emphasis should be put on increasing the methodological awareness in all phases of the research design.
Svaboe et al. (Mon,) studied this question.