limits and onboard camera

ISA technology relies on a car’s GPS location and matches it to a database of posted speed limits and onboard cameras to come up with the legal speed limit.

Passive ISA systems warn a driver when the vehicle exceeds the speed limit through sound, visuals or haptic alerts, leaving the driver responsible for slowing the car.

Active systems might make it more difficult to increase the speed of a vehicle, or even fully limit it from going, above a posted speed limit.

Some Americans might chafe at the idea of an active ISA system that limits their freedom of movement.