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The CDL general knowledge test is required to be taken by all CDL applicants. The Massachusetts CDL test consists of 50 questions. To pass, you must correctly answer at least 40 questions (80%). The general knowledge test covers the contents of the Massachusetts CDL Manual. All CDL applicants (Class A, B and C) must study the following sections: Driving Safely, Transporting Cargo Safely, Air Brakes (if you plan to operate vehicles equipped with air brakes), Vehicle Inspection Test, Basic Control Skills Test, Road Test. In addition, the Class A CDL test will include questions based on the Combination Vehicles section. Take this CDL practice test now to prepare for the actual MA general knowledge test! To get your CDL, you must pass both the knowledge and skills tests. CDL knowledge tests include: General Knowledge, Passenger Transport, Air Brakes, Combination Vehicles, Hazardous Materials, Tanker Vehicles, Doubles/Triples, School Bus, Firefighter. Depending on what class of license (A, B or C) and endorsements you need, you must take one or more knowledge tests. A special endorsement is also required to drive certain types of vehicles. The following endorsements may be used with a Class A, B or C CDL: HazMat (H), Tank Vehicles (N), Tank Vehicles Transporting Hazardous Materials (X) and Passenger Transport (P). The School Bus endorsement (S) is only available for Class A or B CDL, and the Doubles/Triples endorsement (T) is only available for Class A driver's licenses.
1. Hazardous materials can be recognized by looking at the container's:
2. You cannot inspect sealed loads, but you should:
make sure the cargo is piled up high.
check that the lightest parts of the cargo are under the heaviest parts.
check that the content matches the description on the shipping paper.
check that you do not exceed gross weight and axle weight limits.
3. If stopped on a hill, how can you start moving without rolling back?
Press on the gas pedal, even if you have to roll back a little.
Release the parking brake before you have applied enough engine power to keep from rolling back.
Partly engage the clutch before you take your right foot off the brake, put on the parking brake if necessary.
None of the above.
4. HAZMAT placards are:
regulatory signs
warning signs
optional signs
speed signs
5. To avoid being blinded by the high beams of an oncoming vehicle:
look at the right side of the road.
watch the sidelines when someone coming toward you has very bright lights on.
don't look directly at bright lights when driving.
All of the above.
6. Signaling well before you turn is the best way to:
let oncoming drivers know that you are about to make a turn.
invite other drivers to get around you.
let pedestrians know that you are about to make a turn.
keep other drivers from trying to pass you.
7. The safety relief valve is located:
in the front brake.
on each end of the vehicle's axles.
in the first tank the air compressor pumps air to.
on the dashboard.
8. When backing, if you are unsure you should:
get out of your vehicle and check your path.
call your dispatcher.
continue backing.
turn toward the passenger's side.
9. At highway speeds, good drivers look at least _______ ahead.
1/2 feet
150 feet
1 mile
1/4 mile
10. How far ahead do most good drivers look?
6 to 8 seconds
12 to 15 seconds
50 to 60 seconds
3 to 4 seconds
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MA CDL Practice Test

Number of questions: 50
Correct answers to pass:40
Passing score:80%
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