Intelligent Speed Assistance – Myths and Reality

  • Published: European Transport Safety Council, 2006
  • Authors: European Transport Safety Council
  • Date Added: 08 Feb 2013
  • Last Update: 08 Feb 2013
  • Format: pdf


To refute a number of myths hindering ISA implementation.



Key Findings:

  • ISA is a mature technology — ISA systems are robust and reliable.

  • The provision of up-to-date speed limit data is complex, but achievable. There are issues about delivery of the information to end users, i.e. drivers.

  • Research has found that, in cost-benefit terms, gains substantially outweigh the costs of ISA implementation.

  • ISA does not mean that complete control is taken away from the driver. The driver is still responsible for the control of the vehicle and ISA technologies are merely a tool to enable the driver to comply with the speed limit.

  • Drivers generally recognise the risks involved in driving too fast and support measures to reduce speeding.

  • Exceeding the speed limit is a significant contributor to RTIs and speeding is often linked to other risky behaviour.In addition to its benefits for vehicle occupants, ISA can make a substantial contribution to improving the safety of other road users such as pedestrians and cyclists.


Intelligent Speed Adaptation


Those conclusions that are relevant to Advisory forms of ISA have been selected.