Back to Practice Tests

Q

What does the trailer air supply control look like?

Combination Vehicleseasy

AA blue triangle

BIt is an eight-sided red knob.

CA green square

Detailed Explanation

The correct answer is "It is an eight-sided red knob". This is based on federal CDL regulations and safety standards.

Correct Answer: It is an eight-sided red knob

Advertisement

Ready to practice for real?

Take our free, full-length Combination Vehicles practice test. Simulates the actual DMV exam with timed questions.

Start Practice Test

Related Questions

While inspecting a coupling, you should go under the trailer and:

combination-vehiclesmedium

75. Describe what the trailer air supply control does:

combination-vehiclesmedium

4. When you get ready to back under the semi trailer you should line up:

combination-vehiclesmedium

Using the trailer hand brake while experiencing a trailer jackknife will:

combination-vehiclesmedium

In a vehicle equipped with an automatic tractor protection valve, the valve will pop out when:

combination-vehiclesmedium

Advertisement