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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. _________ is the distance it takes to stop in ideal conditions once the brakes are applied.
Safe following distance
Braking distance
Perception distance
Stopping distance
2. The most important reason for doing a vehicle inspection is:
Liability insurance
Employer liability
Property damage requirements
3. To avoid rollbacks when you start, you should:
put on the parking brake whenever necessary.
if you have manual transmission, partly engage the clutch before you take your right foot off the brake.
release the parking brake only when you have applied enough engine power.
All of the above.
4. If you have to drive off the road, you should:
fully apply the brakes until your speed has dropped to about 20 mph.
keep one set of wheels on the pavement, if possible.
brake as hard as you can to maintain control.
leave the road completely.
5. As part of your pre-trip inspection, make sure:
the vehicle is not overloaded.
the cargo is balanced properly.
your cargo does not obscure your view.
All of the above.
6. What is an advantage of going right instead of left around an obstacle?
No one is likely to be passing you on the left, but someone may be driving on the shoulder.
If an oncoming driver has drifted into your lane, their natural response will be to brake suddenly.
If you are blocked on both sides, a move to the right won't force anyone into an opposing traffic lane and a possible head-on accident.
There is no real advantage.
7. Having ABS on only the trailer:
still gives you more control over your vehicle during braking.
makes the trailer more likely to swing out.
makes the trailer more likely to roll over.
is very dangerous.
8. If your vehicle is equipped with a retarder, you should turn it off:
when you need to accelerate suddenly.
whenever the road is wet, icy, or snow covered.
when you are driving in heavy traffic.
when you are running late.
9. For proper steering, steering wheel play should be no more than:
50 degrees.
25 degrees.
10 degrees.
30 degrees.
10. In the event of brake failure you should NOT:
pump the brakes.
shift up.
use the parking brake.
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CDL Knowledge Test WI

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