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The CDL general knowledge test is required to be taken by all CDL applicants. The Pennsylvania 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 Pennsylvania 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 PA 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. An alcohol evaporator:
used to reduce the chance of the front wheels skidding.
to hold compressed air.
protects the air brake system from too much pressure.
is used to reduce the risk of ice in air brake valves and other parts during cold weather.
2. When crossing railroad tracks, you should:
stop on the tracks.
apply the parking brakes.
shift gears while crossing the tracks.
stay in your lane.
3. If your vehicle is hydroplaning, you should:
release the accelerator and push in the clutch.
accelerate to get through the water as quickly as possible.
use the brakes to slow down.
None of the above.
4. If your truck catches fire, the first thing you should do is to:
get the vehicle off the road and park near other vehicles.
pull off the road and park in an open area.
pull into a service station and call for help.
get off the vehicle, open the hood and start shooting foam to keep the engine cool.
5. Which of the following statements about driving in cold weather is true?
You should use windshield washer antifreeze.
Brakes will never fade or fail from excessive heat caused by using them too much.
Exhaust system leaks are less dangerous in cold weather.
An engine cannot overheat when the weather is very cold.
6. When is use of a drug given to a driver by a doctor permitted?
Only if it's a prescription drug.
Only if it's an over the counter drug.
Only if the doctor informs the driver that the drug won't affect safe driving ability.
7. To know when it's time to shift up:
watch your tachometer, and shift up when your engine reaches the bottom of the range.
use mirrors on both sides.
use engine speed and road speed.
check the user manual.
8. To avoid becoming distracted while driving, you should:
be careful when reading a text message on your mobiledevice while driving.
pre-program your favorite radio stations.
familiarize yourself with your vehicle's features within the first 10 miles of driving.
All of the above.
9. With the controlled braking method:
you lightly tap the brakes.
you apply your brakes all the way and release the brakes when the wheels lock up.
you use the parking brake to lock the wheels.
you apply your brakes as hard as possible without locking the wheels.
10. Passive railroad crossings:
do not have traffic control devices.
should never be crossed using a CMV.
have at least one traffic control device.
usually have a person directing traffic.
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CDL Knowledge Test PA

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