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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. Which of the following will not prevent distracted driving?
Using your phone only when there is no traffic around you.
Pre-programming radio stations.
Clearing the vehicle of any unnecessary objects.
Planning your route before you begin driving.
2. When traction is poor, as in rain or snow, you should speed up very gradually. If you don't:
you will exceed the speed limit.
you could lose control.
the brakes will not work.
brake pressure will push the rod out.
3. When crossing railroad tracks, you should:
stay in your lane.
stop on the tracks.
apply the parking brakes.
shift gears while crossing the tracks.
4. With an engine fire, you should NOT:
shoot foam from the vehicle’s underside.
open the hood.
turn the engine off as soon as possible.
None of the above.
5. When checking the steering system during your pre-trip inspection you should look for:
shoes or pads with oil or grease on them.
steering wheel play of more than 10 degrees.
cracked drums.
mismatched lock rings.
6. In newer vehicles with air brakes, you put on the parking brake:
placing the transmission in Park.
using a diamond-shaped, yellow, push-pull control knob.
moving the orange push-pull lever to the right.
using a P-shaped, yellow control knob.
7. The law requires __________ to inspect a commercial motor vehicle before a trip.
the owner
the driver
a qualified testing engineer
a qualified inspection technician
8. ABS brakes help you:
lock up the wheels in an emergency stop.
find an escape route when the service brakes fail.
downshift before starting down a hill.
avoid wheel lock up.
9. Empty trucks require greater stopping distances. True or False?
True, but only on wet surfaces.
False, but only for trucks built on or after March 1, 1998.
10. Stab braking:
involves applying the brakes as hard as you can without locking the wheels.
involves applying the brakes all the way, and releasing them when wheels lock up.
involves steady pressure on the brake pedal without locking the wheels.
should never be used.
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CDL Knowledge Test MA

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