In the U.S. and in countries all over the world, speeding is one of the leading causes of severe road accidents. Intelligent Speed Assistance or Intelligent Speed Adaptation (ISA) involves in-vehicle technologies that use GPS data interacting with accurate, digitally mapped speed limit data for the entire network or vehicle-based speed limit sign recognition. The NHTSA says ISA systems may: Provide information only (display the speed limit and changes), but the driver can decide how to react (termed half-