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Missouri CDL Permit Test - Knowledge Test Class A

Number of questions: 50
Passing score: 40
Directions: This license is required for driving any legal combination of vehicles, with a gross combination weight rating of 26,001 pounds or more, provided the GVWR of a trailer exceeds 10,000 pounds To receive this license, applicants must pass a 50-question test. To pass, applicants must answer 40 questions correctly. Each question has three possible answer choices. Test questions come from the Missouri Commercial Driver’s Manual. Questions come from chapters covering: Introduction, Driving Safely, Transporting Cargo Safely, Air Brakes (if applicable), Combination, Doubles and Hazardous Materials. Endorsements that may be used with a Class A CDL are: Hazardous materials, Tank, Passenger, HazMat and Tank, Air Brakes and School bus.
You have made error so far
Passing grade —
10 or fewer errors
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1.
Brake linings should be:
Loose.
Free of oil.
Soft.
2.
When starting an engine:
The brakes will lock up.
Warning lights should turn on, then quickly turn off.
Coolant temperatures should decrease.
3.
When loading a trailer, it is important to:
Place as little weight as possible over the axles.
Place a well-balanced amount of weight over the axles.
Place weight over only the axles.
4.
When driving a vehicle equipped with an Anti-Lock Braking System (ABS), you should:
Always pump the brakes several times before holding down the brake pedal.
Brake normally.
Press down the brake pedal as hard as possible every time you slow or stop.
5.
Which of the following is not a good rule when using turn signals?
Signal early. Signal well before a turn or lane change.
Signal continuously. Do not cancel a signal until the turn is completed.
Don’t over-signal. If no one is near you, there is no need to signal.
6.
Hydroplaning happens most often when:
A vehicle is traveling faster than 60 mph.
Tire pressure is too low.
Tire tread is too deep.
7.
Air brakes use ____ to function.
Compressed air
Liquid air
Nitrogen
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