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The CDL general knowledge test is required to be taken by all CDL applicants. The Oregon 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 Oregon 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 OR 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. When using a turn signal, which of the following is NOT true?
You should cancel the signal before completing the turn.
You should turn off your turn signal after you've turned.
You should signal continuously.
You should signal early.
2. After the first stop, drivers must inspect the securement of the cargo:
every 100 miles or every two hours.
every 150 miles or every three hours.
every 50 miles or every hour.
every 250 miles or every five hours.
3. If you are being tailgated, you should:
turn on your taillights.
make quick changes.
increase your speed very gradually.
open up room in front of you.
4. On wet roads, you must drive slower to be able to stopĀ in the same distance as on a dry road. Reduce speed by about _______ when driving on a wet road.
60 percent
70 percent
5. Emergency brakes must be held on by:
dynamic pressure.
mechanical force.
hydraulic pressure.
air pressure.
6. If your trucks has a high center of gravity, which of the following is true for curves?
You should slow down, as your truck can roll over at the posted speed limit for the curve.
Reduce your speed to a crawl.
You should travel at the posted speed limit.
None of the above.
7. To test your parking brake, do the following:
Set the parking brake, and gently pull against it in a low gear.
Set the parking brake while going downhill.
Speed up to 5 mph, then set the parking brake.
Speed up to 15 mph, then set the parking brake.
8. What is a pull up when referring to truck driving?
Using the speedometer to know when to shift up.
A driving maneuver used to pull your vehicle over to the side of the road and stop.
When a driver stops and pulls forward to get a better position.
A specific maneuver used to decelerate smoothly in the exit lane.
9. What is the most important reason for doing a vehicle inspection?
Safety for yourself and for other road users.
Liability insurance.
It's required by law.
To avoid fines.
10. When taking a curve you should:
maintain the same speed you were traveling at before entering the curve.
slightly exceed the posted speed limit for the curve, as this will help you keep control.
brake in the curve to avoid to locking the wheels.
be in a gear that will let you accelerate slightly in the curve.
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Number of questions: 50
Correct answers to pass:40
Passing score:80%
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