Alabama CDL Knowledge Test Class B: Practice Test - Practice Test 1
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Spring brakes come on:
When too much air pressure is lost.
When a control on the dashboard is activated.
When the tires have minimal tread depth.
When the brakes are noisy.
What are placards?
Signs placed on a vehicle to identify cargo hazards
A type of tire used in snowy conditions
Logs kept inside the vehicle
Journals for mileage
Sending text messages while driving:
May be done if the messages are short.
Is encouraged.
Is permitted if you are asking a question of your employer.
Is not permitted.
What is sleep debt?
When you fall behind on sleep
When you want to take a nap
Excess sleep
The amount of time it takes to get ready to drive after sleeping
Pressing and releasing a brake pedal unnecessarily can:
Release air faster than it can be replaced.
Add more air to the braking system.
Make the brake pedal more sensitive.
Create a loud noise.
A modulating control valve can control the:
Spring brakes.
Landing gear.
Air brakes.
Anti-lock braking system (ABS).
During a vehicle inspection, be sure that:
The emergency exits are difficult to open.
The emergency exit warning devices work properly.
The emergency exits squeak.
The emergency exits are not accessible from inside the cab.
When backing, a helper:
Should be used whenever possible.
Often adds to the confusion of backing.
Should only be used if the driver is not feeling confident.
Would likely get in the way.
During a pre-trip inspection, what is the best method for checking your lights?
Parking near a mirror to look for a reflection
Activating the lights, then exiting the vehicle to check
Looking on the instrument panel to see if any warning lights are illuminated
Driving in traffic and waiting for other drivers to let you know your lights are out
Which of the following is not a crime that would disqualify an applicant from a hazardous materials endorsement?
Arson
Dishonesty
Robbery
Littering
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