This report is based on a study carried out by the Department of Traffic Planning and Engineering at Lund Institute of Technology during 1988/89, with financial support from the Transportation Research Board. The project consisted of a first inventory and structuring of different effects which can be expected when using a Speed Limiter (SL) in cars in urban traffic. In the initial phase it was especially important to describe the basic scientific and practical conditions for speed reducing measures, as well as the obstacles encountered in practice of having drivers adapt their speed themselves. In connection with these obstacles we would like to explain the reason why we decided to base the project on a hypothetical "compulsory SL" : the fact that the driver has an SL in the car which he knows will be used only when he decides, means that there is not enough incentive for us to assume the driver will use it. If the SL is to be an effective instrument in trying to make people keep speed limits, it must be compulsory.
Samenvatting