16. When you turn with the tractor/triple trailer combination the wheels that offtrack (cheat) the most are:
The wheels of the last trailer.
17. How can you be sure you supplied air to a second trailer?
Go to the rear of the second trailer and open the emergency line shut-off.
18. Before you can supply air to the air tanks of a second trailer you need to:
Open the shut-off valves at the rear of the first trailer and close the shut-off valves at the rear of the second trailer.
19. When does the Driver’s Manual say you should disable the steering axle brake?
Never.
20. What is likely to happen if the pintle hook is unlocked with the dolly still under the second trailer?
The dolly tow bar may fly up