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The CDL general knowledge test is required to be taken by all CDL applicants. The Wisconsin 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 Wisconsin 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 WI 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. What is a hazard?
Any road condition or other road user that is a possible danger.
The most common cause of hydroplaning.
Something you must stop for.
The driver is uncertain about taking the off ramp.
2. Why should you avoid driving too near the edge of the road?
To keep other vehicles from passing you.
To get a better view of the road ahead.
Driving too near the edge of the road can cause the top of your vehicle to hit roadside objects.
All of the above.
3. You have two tie-downs on a 15 foot load. How many more tie-downs do you need to secure cargo and keep it from shifting or falling?
None
Three
Two
One
4. A passive railroad crossing is one that:
has at least two traffic control devices installed at the crossing to regulate traffic.
does not have any type of traffic control device.
requires you to stop and wait until the traffic control device installed at the crossing tells you to proceed.
has a traffic control device installed at the crossing to regulate traffic.
5. What should you do if your vehicle starts hydroplaning?
Release the accelerator and push in the clutch to let the wheels turn freely.
Apply the brakes and countersteer to regain control of the vehicle.
Leave the road completely.
Accelerate slightly, then push in the clutch to slow down.
6. When changing lanes, you should:
not use your mirrors.
do it quickly.
not use your turn signals.
None of the above.
7. To prevent drowsiness and maintain alertness, adults need ______ hours of sleep.
5-6 hours
11-12 hours
3-4 hours
7-8 hours
8. Emergency brakes are:
required on all vehicles.
not required on doubles.
not required on commercial vehicles with air brakes.
not required on buses.
9. Which of the following should be checked for looseness, sticking, damage, or improper setting?
Steering wheel
Clutch
Accelerator
All of the above.
10. Too little weight on the driving axles can cause:
poor visibility.
longer stopping distances.
poor traction.
mechanical damage.
 
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WI CDL Test

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