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The tanker endorsement applies to drivers who wish to drive a tank in Class A, B, or C CDL. To add this endorsement to your CLP/CDL, you must pass a knowledge test on the problems posed by large volume liquid cargos. The Oregon CDL tank vehicles test consists of 20 questions. To pass, you must correctly answer at least 16 questions (80%). The OR tanker test covers the following sections of the Oregon CDL Manual: Driving Safely, Combination Vehicles, Tank Vehicles, Hazardous Materials. Take this OR tanker practice test now to prepare for the actual test!
1. You as a driver should always:
stay in your lane.
make emergency plans when you see a hazard.
drive slowly in the left lane of traffic.
reduce your following distance.
2. When stopping you should push the brake pedal down:
as hard as you can.
3. How should you apply the brakes when going down a steep downgrade?
Apply the brakes when you reach the bottom of the downgrade.
You should not brake, and only use engine braking to prevent brake failure.
Apply the brakes as hard as you can without locking the wheels.
Apply the brakes whenever you reach your safe speed, until your speed has been reduced to 5 mph below your safe speed.
4. The regulations require that HazMat employees be trained and tested at least once every:
3 years.
5 years.
10 years.
5. Your vehicle should be equipped with all of the following except:
Spare electrical fuses
Warning devices for parked vehicles
Instructions on how to perform a vehicle inspection test
Fire extinguisher
6. Overloading can have bad effects on all of the following except:
Speed control
Exhaust system
7. With the controlled braking method:
you use the parking brake to lock the wheels.
you apply your brakes all the way and release the brakes when the wheels lock up.
you lightly tap the brakes.
you apply your brakes as hard as possible without locking the wheels.
8. What results from movement of the liquid in partially filled tanks?
Liquid splashes
Liquid flow through
Liquid waves
Liquid surge
9. At a rest area, you discover your hazardous materials shipments is leaking. There is no phone around. You should:
continue driving in order to find a phone.
send someone else for help and give that person all of the necessary information.
never park your vehicle.
keep driving slowly until you reach a truck stop.
10. The tire load for each tire is stated:
on the tread of the tire.
on the side of the tire.
on the inside of the tire.
on the vehicle's operator manual.
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OR CDL Tanker Test

Number of questions: 20
Correct answers to pass:16
Passing score:80%
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