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The CDL general knowledge test is required to be taken by all CDL applicants. The Maine 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 Maine 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 ME 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. The use of brakes on a steep downgrade is:
the main braking factor.
much more effective than the engine braking effect.
a supplement to the braking effect of the engine.
2. Which surface is the most slippery?
Ice that is not wet
Wet pavement
Wet ice
3. When driving on packed snow, you should reduce speed by:
a half.
4. You should check air pressure and temperature gauges:
at the end of each trip.
as often as is practical.
at the beginning of each trip.
5. Before starting down a hill, you should:
release the accelerator and shift to Neutral at the same time.
slow down and shift to a lower gear.
look for an escape route.
6. After starting the engine, you are looking at the oil pressure gauge. Oil pressure should come up to normal within:
5 minutes.
2 minutes.
7. When driving, you should check your mirrors:
only when there may be a problem.
every 10 seconds.
8. When crossing railroad tracks, you should:
shift gears while crossing the tracks.
try to pass slower vehicles.
not stop.
9. When inspecting your vehicle for suspension system defects, look for:
cracked or broken spring hangers.
leaking shock absorbers.
All of the above.
10. To prevent rollover, you should:
keep the cargo as close to the ground as possible.
place the cargo near the rear of the trailer.
put the lightest parts of the cargo under the heaviest parts.
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Number of questions: 50
Correct answers to pass:40
Passing score:80%
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