IntelIigent Speed Assistance (ISA)

Intelligent Speed Adaptation (ISA) is an in-vehicle system that uses information on the position of the vehicle in a network in relation to the speed limit in force at that particular location. ISA is meant to support drivers and help them to comply with the speed limits everywhere in the network. In that way ISA aims to prevent speeding violations (see also the ERSO text on Speeding).

If large scale voluntary adoption of ISA will reduce the bulk of speed violations, this not only supports speed enforcement but may shift the emphasis of enforcement from general deterrence to specific deterrence. Instead of keeping speeds of the general driving public down - a task then taken over by generally accepted technology - the police can focus more on detecting extreme or repeated speed offenders.

Rule 10:

To the extent that new technologies facilitate voluntary speed control, police speed enforcement can direct itself more at detecting extreme or repeated speed offenders.