Investigation of effectiveness and negative side-effects of parking-measures, aimed at reducing rush-hour traffic and car use in general. The study investigates secondary and tertiary effects of policy-measures with regard to parking. Secondary effects relate to choice between transportation alternatives, tertiary effects to location behaviour of both employees and firms. The study consists of five sub studies: 1. P1024A: Screening of car-drivers to single out commuters, working in nine selected peripheral working areas ( Amsterdam Sloterdijk, Amsterdam Zuid, Amsterdam Zuidoost, Den Haag Bezuidenhout, Schiphol, Rotterdam Noordoost, Den Haag Laakhavens, Rijswijk Plaspoelpolders, Hoofddorp Beukenhorst ). Data on: commuting-time / choice of alternative way of transport if not by car.( N=1124 ) 2. P1024B: Stated preference questionnaire filled out by screened respondents. Data on: preferred transportation alternatives / parking: search-time, costs, walking distance / will parking measures make respondent change job? /car-allowance / job requires use of car? ( N=596 ) 3. P1024C: Tertiary effects of parking measures on employees who recently changed job. Comparison of commuting data of current and former job: distance / means of transportation / parking / parking costs / car allowance / relative importance of factors influencing choice of job / relative importance of commuting factors in choice of current job. ( N=153 ) 4. P1024D: Tertiary effects of parking measures on newly employed. Commuting situation / relative importance of commuting factors in accepting this job / moving / car ownership. ( N=74 ) 5. P1024E: Tertiary effects of parking measures on firms. Parking situation / number of car-commuters employed / public transport connections / will parking measures lead to relocation of the firm? ( N=201 ) Background variables: basic characteristics/ residence/ place of work/ income/capital assets/ education