CDL Offset Backing: Shift Lanes in Reverse
Last updated · By David Nelson
In offset backing you back out of one lane and into a parallel lane beside it, either to the left or the right, and stop with the whole rig inside the new lane.
The plan is simple: turn to start the trailer moving toward the new lane, then counter steer to follow it in, then straighten.
The course
Two lanes sit side by side, offset by about one lane width. You start straight in one lane and back into the other. Left offset is easier because you can see the trailer through your window.
Scoring basics
- Pull-ups cost points after any free ones your state allows.
- Encroachments on any boundary cost points.
- G.O.A.L. is allowed a limited number of times.
- Final position: your rig must end straight and inside the new lane, near the rear cones.
Step by step for a left offset
- Back straight until the trailer tandems reach the start of the new lane.
- Turn right to send the trailer left toward the new lane.
- When the trailer is pointing into the new lane, turn left to follow it with the tractor.
- Straighten the wheel as the rig lines up, then back to the end.
Right offset tips
Do the same steps in mirror image. You will rely on your right mirror, so G.O.A.L. once early if you are unsure where the cones are.
Share with your class
Send this to your classmates or your group chat.
Studying for the Class A skills test? This offset backing guide and free phone trainer from RigReady CDL helped me practice:
Frequently asked questions
Is left or right offset backing harder?
Right offset is usually harder because it is a blind side backing and you work from the right mirror only.
When should I start turning in offset backing?
Start turning when your trailer tandems reach the beginning of the new lane. Starting too early cuts the corner cones.
How do I know my state's offset rules?
Your state CDL manual lists the course size, pull-up limits and G.O.A.L. limits. Some states pick the side on test day.
Can I practice offset backing at home?
Yes. The RigReady Backing Trainer has a left and right offset course you drive with your mirrors and phone tilt.
Ready to practice this?