Reversing a semi-trailer requires that you?

• A. Tap the throttle gently to begin reversing
• B. Honk the horn only if there are other vehicles or bystanders in the vicinity
• C. Turn the steering wheel in the opposite direction of where you want to go
• D. Turn the steering wheel in the same direction you want to go

Answer: (C)

When you back a semi-trailer, the trailer’s path is opposite to the steering wheel input. This happens because the front wheels of the tractor steer the tractor, while the trailer pivots on the kingpin, so as you back up, turning the wheel in the opposite direction causes the trailer to swing in the direction you actually want to reach. So if you want the trailer to go left, you steer to the right; if you want it to go right, steer to the left. Use small, smooth corrections and check your mirrors (and a spotter if available) to keep the trailer on the desired path. The throttle, honking, or turning the wheel in the same direction you want the trailer to go won’t produce the correct back path and can make the trailer swing wider or misalign.