View instructions
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. In order to protect yourself and others, you must be aware that children may do something hazardous because:
they are often found in school zones.
they tend to like trucks.
they don't have a driving license.
they tend to act quickly without checking traffic.
2. ________ is the distance your vehicle will travel, in ideal conditions, while you are braking.
Perception distance
Stopping distance
Braking distance
Reaction distance
3. Which of the following are possible causes of tire fires?
Over-inflated tires and short circuits.
Improperly loaded cargo and dual tires that touch.
Under-inflated tires and dual tires that touch.
Loose fuel connections or under-inflated tires.
4. When checking the engine compartment, which of the following should you check?
Engine oil level.
Battery fluid level.
Windshield washer fluid level.
All of the above.
5. Objects that have fallen on the road:
can be a danger to your tires and wheel rims.
can damage electrical and brake lines.
can be hazards.
All of the above.
6. In vehicles with air brakes, the air compressor governor:
controls when the air storage tanks will pump air into the air compressor.
controls when the air compressor will pump air into the air storage tanks.
controls how much air the air compressor will pump into the air storage tanks.
None of the above.
7. Before you back into an area, you should __________ overhanging hazards like trees, branches or electric wires.
ask someone else to check for
look out of the windows for
get out of the vehicle and check for
check your mirrors to be aware of
8. Gross vehicle weight (GVW) is:
the total weight of a single vehicle, except its load.
the total weight of a single vehicle including its load.
the total weight of the vehicle axle.
the total weight of the trailer or trailers.
9. Blocking is used to:
protect people from spilled cargo.
keep the cargo from sliding.
protect the cargo from weather.
All of the above.
10. In an emergency:
you should never turn to miss an obstacle.
stopping is always the best thing to do.
stopping is not always the safest thing to do.
you should keep one hand on the steering wheel.
Page 1 of 5
Next page

PA CDL Practice Test

Number of questions: 50
Correct answers to pass:40
Passing score:80%
Share This Online CDL Test
Rate this CDL Practice Test
4.9 out of 5
based on 282 votes