Intelligent speed adaptation (ISA) forcing speed adjustment by intervening the fuel supply system has been trialed in the Dutch city of Tilburg during a one year period. The trial included personal cars in a residential area with 30 km/h respectively 50 km/h speed limits and roads immediately outside the built-up area. Answering the question what level of acceptance of ISA does exist among car drivers and whether ISA exposure is just stimulating rather than discouraging was one of the crucial study objectives. The paper presents some salient aspects of the research design. In addition, it provides some selected results of the study commissioned by the Transport Research Centre (AVV). The study shows a positive perspective to automatically enforced speed adaptation. Practise with ISA appears not to induce a lower level of acceptance. The opposite is more likely. However, the basis for acceptance is frequently not embedded in the understanding of a speeding problem which would require to settle the problem. (A) For the covering abstract of the conference see ITRD E206647.
Abstract