Why is it dangerous to continue driving after the low air pressure warning has activated?

Pick an answer

1. Available braking power is reduced, and the spring brakes could apply suddenly once pressure drops further
2. The warning is only a reminder to check the radio
3. It has no real safety implication as long as the speed stays under the posted limit
4. It only matters if the vehicle is going downhill

Correct!

Not quite. The correct answer is highlighted.