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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.
When loading a trailer, weight should be:
Placed as high as possible.
Placed as low as possible.
Placed as far to the left as possible.
2.
In a dual air brake system:
Air tanks are shared between both systems.
Each system has its own air tanks.
You must designate which system you are using.
3.
When it’s difficult to see, such as at dawn or dusk, a driver can increase their vehicle's visibility by:
Driving while using their lights.
Driving with their windows open.
Flashing their lights periodically.
4.
When are people usually the least alert?
In the morning
In the early evening
Late at night
5.
The minimum acceptable tread depth for rear tires is:
1/64 of an inch.
1/32 of an inch.
2/32 of an inch.
6.
When approaching your vehicle as part of a pre-trip inspection, seeing fresh oil underneath the vehicle is:
A good sign.
Normal.
A cause for concern.
7.
What do air brakes use to make the brakes work?
Compressed air
Outside air
Non-compressed air
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