Abstract

Intelligent Speed Adaptation (ISA) involves an in-vehicle system, which supports the driver in not exceeding the speed limit. Inappropriate speed or speeding is a major cause of road traffic accidents and strongly relates to the outcome of an accident (research indicates that in Europe one third of all fatal accidents is caused by inappropriate speed). As such, ISA has the potential to substantially improve traffic safety and is recognized as a promising speed management policy. Over the past decades, a lot of research on ISA has been conducted across Europe. This research involved different ISA systems, ranging from simple information provision to keeping the car to the local speed limit, and a variety of different methodologies, ranging from pilots and trials, to driving simulator studies, computer simulations and expert elicitation of opinions. The central notion in this chapter is to describe which evolutions were found about ISA around the world to assess the effects of ISA on social, ecological, economical, political and technical level. By discussion and evaluation of some ISA studies and ISA developments, two main questions will be answered: what do we know and what is still do be done? This will result in an overview of barriers and issues that have been resolved and that still have to be resolved, to enable large-scale implementation.

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