Research and development for the Wales National Travel Survey The documents on this page give details of research and methodological developments undertaken for the Wales National Travel Survey. Wales National Travel Survey: Review Report Wales National Travel Survey: Survey Evaluation Report Wales National Travel Survey: Diary Evaluation Wales National Travel Survey: Questionnaire Assessment Wales National Travel Survey: Sampling approaches Wales National Travel Survey: Additional Sampling note WNTS Stage 1b: Qualitative and Quantitative testing Wales National Travel Survey - Pretesting Synthesis Report WNTS Pilot 1: Analysis Report Decisions for Wales National Travel Survey: Following analysis of Pilot 1