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The CDL general knowledge test is required to be taken by all CDL applicants. The Utah 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 Utah 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 UT 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 you double your speed from 20 to 40 mph, the braking distance:
increases slightly.
is 4 times longer.
stays about the same.
2. Driving dry bulk tanks requires special care. Why?
Their weight and size can make it more difficult to stop quickly.
The load can shift.
They have a high center of gravity.
All of the above.
3. Loose cargo:
can be a danger to others and yourself.
could hurt or kill you during a quick stop.
could fall off your vehicle and cause traffic problems.
All of the above.
4. Retarders:
help slow a vehicle and reduce brake wear.
apply their braking power whenever you push on the accelerator.
help prevent accidents by applying extra braking power to the non-drive wheels.
All of the above.
5. Effects of distracted driving include:
slowed perception.
failure to perceive an important traffic event.
delayed decision making.
All of the above.
6. How should you apply the brakes when going down a steep downgrade?
Apply the brakes whenever you reach your safe speed, until your speed has been reduced to 5 mph below your safe speed.
You should not brake, and only use engine braking to prevent brake failure.
Apply the brakes when you reach the bottom of the downgrade.
Apply the brakes as hard as you can without locking the wheels.
7. To know when it's time to shift up:
use mirrors on both sides.
use engine speed and road speed.
watch your tachometer, and shift up when your engine reaches the bottom of the range.
check the user manual.
8. Placards are:
signs that warn others to stay at least 500 feet away from the vehicle.
signs put on the inside of a vehicle that remind the driver of the type of cargo he or she is carrying.
signs put on the outside of a vehicle that identify the hazard class of the cargo.
used to warn others when the Gross Vehicle Weight (GVW) exceeds 10,000 pounds.
9. The most common cause of skidding is:
driving too fast for conditions.
spilled oil.
surface water.
black ice.
10. Air brakes:
should be used only when driving on wet roads.
can improve fuel efficiency.
are an effective way to stop large and heavy vehicles.
are prohibited on larger vehicles.
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CDL Knowledge Test UT

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