CDL PRACTICE TEST (ID) - GENERAL KNOWLEDGE TEST
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The CDL general knowledge test is required to be taken by all CDL applicants. The Idaho 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 Idaho 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 ID 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.
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1.
Broken suspension parts:
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can be extremely dangerous.
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should not be a concern unless you are driving on steep grades.
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hold up the vehicle and its load and keep the axles in place.
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2.
With a dual air brake system:
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each system shares the same lines and hoses.
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each system shares air tanks.
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each system has its own air tanks, hoses and lines.
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3.
When driving at night you should:
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always use low beams.
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use your high beams when it is safe and legal to do so.
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All of the above.
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4.
Which of these describes the proper braking technique when driving on a long and steep downgrade?
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Apply the brakes until your speed has been reduced to 5 mph, then release the brakes. When your speed has increased to your safe speed, repeat the previous steps.
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Release the brakes until your speed is 5 mph above your safe speed, then apply the brakes. When your speed has decreased to your safe speed, repeat the previous steps.
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Apply the brakes. When your speed has been reduced to 5 mph below your safe speed, release the brakes. When your speed has increased to your safe speed, repeat the previous steps.
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5.
Service brakes should:
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always be checked before applying the brakes.
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be checked before each trip.
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only be checked by a mechanic.
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6.
When the spring brakes are on, you should never:
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push the brake pedal down.
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upshift.
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change lanes.
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7.
If you are confronted by an aggressive driver, you should:
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try to move away safely.
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remain calm and relaxed.
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All of the above.
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8.
Do NOT use water on a _______ fire.
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cloth
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paper
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gasoline
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9.
What are the two basic reasons for covering cargo?
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To protect people from spilled cargo and the cargo from weather.
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To protect people from spilled cargo and the cargo from pilferage.
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To protect the cargo from weather and to avoid littering.
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10.
When you're going uphill and a heavy load is slowing you down, you should:
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shift into a lower gear.
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stay in the left lane if you can.
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pass another slow vehicle to gain speed.
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CDL Knowledge Test ID
| Number of questions: | 50 |
| Correct answers to pass: | 40 |
| Passing score: | 80% |
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