The objective of Household Interview Survey (HIS) is to assess the household socioeconomic and trip characteristics. . The aim of this survey is to provide government departments and other organization with information on a range of topics concerning private households for monitoring and policy purposes. The topics that are included in the questionnaire cover general information such as demographic information about household members, housing tenure, consumer durables including vehicle ownership and migration. The individual questionnaires, completed by all adults over 18 years of age resident in a household, also include issues such as employment, pensions, education, health, smoking and drinking, family information and income.