Question 8025
Which driver assistance system controls the vehicle's speed and limits it based on the existing traffic signs?
- The autonomous emergency braking system, or AEB.
- The cross-traffic alert system, or RCTA.
- The intelligent speed assistance system, or ISA.
Show answer and explanation
Correct answer: The intelligent speed assistance system, or ISA.
ISA gets the speed limit for each road section from signs or maps and displays it for you, like the 80 projected onto the windshield in the image alongside your speed of 78 km/h. If you exceed it, it warns you and, depending on the car, reduces power to keep you from going above it. Even so, you can always exceed that limit by pressing the accelerator farther down.