Frequency of visiting the centre of the Hague by day, in the evening / kind of transport on working days or in weekends / frequency of use of car to go to centre / route in centre when shopping / satisfaction with the quality of the facilities in the centre / favourite places in centre / opinion on closing the centre for traffic / wishes about centre / frequency of going out or shopping in other town / where does one buy daily provisions and durable articles. Background variables: basic characteristics/ residence/ household characteristics/ place of work/ occupation/employment/ social class