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The CDL general knowledge test is required to be taken by all CDL applicants. The Indiana 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 Indiana 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 IN 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 is NOT correct? An ABS system:
helps you avoid wheel lock up.
reduces the braking pressure to a safe level.
helps you stop faster.
is a safety anti-skid braking system.
2. The safety valve installed in the first tank the air compressor pumps air is set to open:
if there is too little pressure.
every 15 minutes.
at 30 psi.
if there is too much pressure.
3. The _______ applies and releases the brakes when you use the brake pedal during normal driving.
parking brake system
trailer brake system
service brake system
emergency brake system
4. When should you turn the retarder off?
when the road is slippery.
when the cargo is prone to shifting.
when your vehicle has a high center of gravity.
when the cargo is heavy.
5. Driving without a CDL, or with a suspended CDL, incurs:
prison time.
a civil penalty or, in aggravated cases, criminal penalties.
a large fine.
All of the above.
6. When taking a curve you should:
brake in the curve to avoid to locking the wheels.
be in a gear that will let you accelerate slightly in the curve.
maintain the same speed you were traveling at before entering the curve.
slightly exceed the posted speed limit for the curve, as this will help you keep control.
7. On any upgrade, _________ – the more you will have to use lower gears to climb hills or mountains.
the steeper the grade
the heavier the load
the longer the grade
All of the above.
8. If ABS is not working, you should:
brake as you always have.
put on your 4-way emergency flashers.
slow down and use a lower gear.
use the parking brake.
9. What is Gross Vehicle Weight (GVW)?
The total weight of a vehicle, including that of any trailers.
A vehicle's maximum weight rating, specified by its manufacturer.
The total weight of a single vehicle including its cargo.
None of the above.
10. Retarders:
reduce braking distance.
help slow a vehicle, reducing the need for using brakes.
reduce the danger of slipping.
improve gas mileage.
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Number of questions: 50
Correct answers to pass:40
Passing score:80%
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