Which connections come off before you unlock a pintle coupler?
Right! Disconnect the electrical connector, the breakaway brake switch lanyard and the safety chains, then unlock the coupler. 📖 p. 80
From Section 6 of the Colorado Commercial Driver License Manual
Colorado 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 Colorado Commercial Driver License Manual
Your score on each part fills in as you study.
- Manual section 6
- Combination vehiclesNot practiced yetp. 71 to 83
Colorado answers about this test
Practice material, not the official test: check every answer in your state's current handbook. Disclaimer · How the rounds work · DMV
All Colorado 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 Colorado CDL plan, in order.