Missouri CDL Class A, B or C DMV Practice Tests & Cheat Sheets

CDL Class A, B or C. Complete CDL driver training course. All the questions in this test are from the official DMV written exam. You can use our free online tests to evaluate how likely you are to pass the official DMV test. Or you can just cut to the chase and increase your chances of passing by upgrading to Premium Membership and unlock official DMV tests. In addition, you will also receive a master cheat sheet which contains all your state’s DMV questions and answers. Premium membership also unlocks a smart tracker which keeps an inventory of all incorrectly answered questions for easy, fast and effective revision. Practice with our free tests or hit Upgrade button below for premium access and increase your chances of passing your DMV written exam.

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Quick Facts:

Number of Questions – 20

Passing Percentage – 80%

Test Type – Free Test

The service brake system
The parking brake system
The emergency brake system
The auxiliary brake system

Are not required on trucks.
Are only required on trailers.
Are required on tractors.
Are optional.

Two tanks
Four tanks
Six tanks
The number varies.

Loosely attached.
Tight.
Cracked.
Frayed.

Missouri DMV CDL Air Brakes Quick Practice Test

Missouri DMV CDL Air Brakes Quick Practice Test For 2024

99.5% Pass Rate

Green
Yellow
Blue

Air tanks are shared between both systems.
Each system has its own air tanks.
You must designate which system you are using.

Let the vehicle warm up before driving to ensure that the fuel reaches the engine.
Let the air compressor build up a minimum of 100 psi pressure in the primary and secondary systems before driving.
Begin driving just after the vehicle starts.

100
150
200