Who needs ISA anyway? : an ISA system’s safety effectiveness for different driver types.

This study aims at analysing preferred driving speeds for various groups of drivers and drivers with different attitudes to speed and traffic safety, thereby establishing the potential safety benefit for a speed-adapting system. It further aims to analyse the effect of an advisory ISA system on these drivers. Different implementation strategies of ISA are likely to affect different groups of drivers. For instance may an implementation strategy based on company cars affect one group while a voluntary implementation or implementation by legislation are likely to affect other drivers. By comparing the speeds, with and without an ISA system, for drivers of different groups the effectiveness of these strategies can be estimated. (Author/publisher)