Why are crossed air lines dangerous on an older trailer without spring brakes?
Right! With crossed lines on an older trailer, you could have no trailer brakes. 📖 p. 6-5
From Section 6 of the Ohio Commercial Driver License Manual
Ohio CDL Combination Vehicles Practice Test
Who takes it: Class A.
Tractor-trailers and trucks pulling a heavy trailer. 20 questions, 16 right to pass (80%).
Practice Combination Vehicles
- 10questions a round
- 1manual section
Take the Combination Vehicles test
- 20questions
- 16correct to pass
- –no test taken yet
A Combination Vehicles question to try
Tap an answer to see if you’re right, and the page
Where it is in the Ohio Commercial Driver License Manual
Your score on each part fills in as you study.
- Manual section 6
- Combination vehiclesNot practiced yetp. 6-1 to 6-12
Ohio answers about this test
Practice material, not the official test: check every answer in your state's current handbook. Disclaimer · How the rounds work · BMV
All Ohio CDL tests
- General Knowledge
- Combination VehiclesYou're here
- Air Brakes
- Doubles and Triples
- Passenger
- School Bus
- Tank Vehicles
- Hazardous Materials
- Which tests do you need?Pick what you'll drive and get your Ohio CDL plan, in order.