Why should you confirm the low air pressure warning works at the start of every trip, not just occasionally?

Pick an answer

1. A warning device that fails silently gives no indication of a real problem later, so it needs to be verified fresh each time
2. It's only required after a repair, not routinely
3. It only needs testing once when the vehicle is brand new, since federal inspectors verify it annually at every scheduled safety inspection
4. It resets itself automatically and doesn't need checking

Correct!

Not quite. The correct answer is highlighted.