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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. To prevent fire, during the en route inspection you should check the tires, wheels, and truck body for signs of:
a fire extinguisher.
front-wheel skids.
2. Front-end header boards:
protect drivers from cargo in case of an accident or emergency stop.
protect drivers from spilled cargo.
reduce traction.
should never be used.
3. When transporting cargo, cargo securement must be checked within the first _____ miles of a trip and every _____ miles after.
50; 250
150; 250
100; 150
50; 150
4. Which of the following is not part of the air brake system?
Air compressor
Alcohol evaporator
Air filter
Air storage tanks
5. Your safety equipment must include:
a dimmer switch.
an inter-axle differential lock.
spare electrical fuses (only if your vehicle is equipped with circuit breakers).
a properly charged and rated fire extinguisher.
6. When entering the expressway, you should:
use the full length of the entry ramp.
join as quickly as possible.
quickly change multiple lanes to reach the center lane.
merge smoothly into the proper lane of traffic.
7. When should you use the 4-way emergency flashers instead of flashing the brake lights to warn the drivers behind you?
At night time.
When you are driving very slowly or are stopped.
When visibility is poor.
When driving in strong winds.
8. Distracted driving can cause accidents. To avoid distractions while on the road, you should:
smoke, eat, and drink only when traffic conditions allow.
plan your route while driving only if there are no cars around you.
limit the use of your mobile phone to the first hour of driving.
turn off all communication devices.
9. What is the most important reason for doing a vehicle inspection?
To avoid fines.
Safety for yourself and for other road users.
It's required by law.
Liability insurance.
10. You should check air pressure and temperature gauges:
at the beginning of each trip.
at the end of each trip.
as often as is practical.
every time you stop.
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Number of questions: 50
Correct answers to pass:40
Passing score:80%
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