Market and economic research; polling and statistics. The National Travel Survey (NTS) is a face to face, household survey which incorporates a one-week, paper travel diary. The NTS is the only source of robust data on the travel choices that people make day-to-day: how, why and when people travel, and how travel varies according to age, gender, income, household composition and other factors. It is essential data for modelling people’s future travel choices, and trends in overall demand for travel. The NTS is produced and published in accordance with the practices and protocols of UK National Statistics. The contractor will be required to:

— Pilot survey instruments together with fieldwork, coding and data processing procedures,

— Draw a sample of addresses to an agreed design,

— Recruit and train a team of interviewers,

— Design and prepare survey questionnaires, based on existing CAPI documents,

— Design and print travel diaries,

— Carry out the main survey fieldwork from January 2013, maintaining a high rate of response,

— Code of data and input data electronically, with initial validation and editing, for supply to DfT,

— Prepare technical reports.