What should you check regarding the dolly's air tank and air lines during the pre-trip inspection?

Pick an answer

1. That the tank holds air properly and the lines connecting it to the trailers are not damaged or leaking
2. The dolly's air system never needs separate checking from the trailers it connects to since it shares the same tank as the tractor
3. Only that the tank is a specific color
4. Dolly air tanks are optional equipment with no functional role

Correct!

Not quite. The correct answer is highlighted.