Practice question
On the Ohio CDL Combination Vehicles test, what is the correct order to disconnect the air lines and electrical cord when uncoupling?
- Disconnect first, then secure them on dummy couplers or hangers
- Leave them on the trailer; the next driver will move them
- Cut them with a knife if they are stuck
- Disconnect only the red line
Answer: A — Disconnect first, then secure them on dummy couplers or hangers
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