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Washington CDL Permit Test - Knowledge Test Class B

Number of questions: 50
Passing score: 40
Directions: This license is required for driving a single vehicle with a GVWR of more than 26,001 pounds, and a trailer not to exceed 10,000 pounds gross vehicle weight rating, or a vehicle designed to transport 24 or more people (including the driver). To receive this license, applicants must pass a 50-question test. To pass, applicants must answer 40 questions correctly. Each question has three possible answer choices. Test questions come from the Commercial Driver Guide. Questions come from chapters covering: Introduction, Driving Safely, Transporting Cargo Safely, Air Brakes (if applicable), Pre-Trip Vehicle Inspection Test, Basic Vehicle Control Skills Test and On-Road Driving. Endorsements that may be used with a Class B CDL are: Hazardous materials, Tank, Passenger, HazMat and Tank, Air Brakes and School bus.
You have made error so far
Passing grade —
10 or fewer errors
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1.
If driving so slowly that you could impede other drivers, you should:
Drive in the left lane.
Drive while using your four-way flashers.
Drive without using any lights.
2.
____ make up the emergency brake system.
Only parts of the parking brake system
Only parts of the service brake system
Parts of the parking and service brake systems
3.
What is the maximum legal weight to be placed on a single axle?
20,000 pounds
34,000 pounds
80,000 pounds
4.
Failing to drain air tanks could result in:
Water accumulations freezing and causing brake failure.
Squishy brakes.
Too much air collecting in the tanks.
5.
When accelerating on a surface with poor traction, such as a wet road, a driver should:
Speed up quickly.
Speed up slowly.
Not be concerned about the pavement.
6.
When making a left turn, you should start the turn:
Before reaching the center of the intersection.
No sooner than the center of the intersection.
After your rear wheels have passed the center of the intersection.
7.
Convex mirrors:
Cannot be used on vehicles transporting hazardous materials.
Are illegal in most states.
Can help drivers see a larger area.
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