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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. When backing a truck you should:
always rely on your mirrors.
back and turn toward the right side.
look straight ahead.
get out and walk around the vehicle before you begin to back.
2. When driving in heavy rain, your brakes will get wet. Water in the brakes can cause:
lack of braking power.
wheel lockups.
the brakes to apply unevenly.
All of the above.
3. Your total stopping distance consists of __________ plus reaction distance plus braking distance.
following distance
partial stopping distance
perception distance
passing distance
4. Which of the following is NOT a correct action in the event of brake failure?
Putting the vehicle into a lower gear.
Looking for an escape route.
Weaving from side to side to slow down.
Using the parking brake.
5. Fatigue:
does not impair vision and judgment.
increases the chance of an accident.
can easily be prevented by drinking coffee.
has little or no effect on driving.
6. ABS malfunction lamps are located:
on the driver'door.
on the instrument panel.
under the hood.
None of the above.
7. If you experience a loss of hydraulic pressure, you should do all of the following except:
Pump the brakes
Put the transmission in Neutral
Use the parking brake
8. If driving in a foggy area, you should NOT:
slow down before you enter fog.
turn on 4-way emergency flashers.
use high beams for best visibility.
use roadside highway reflectors as guides.
9. To avoid becoming distracted while driving, you should:
adjust all vehicle controls and mirrors prior to driving.
clear the vehicle of any unnecessary objects.
plan your route before you begin driving.
All of the above.
10. You must have at least ________ tread depth on tires other than front tires.
4/16 inch
2/32 inch
8/32 inch
4/32 inch
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MA CDL Knowledge Test

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