AL DMV Commercial Driver's License 3

Question 1

When checking your mirrors while driving a large truck, how often should you glance at them?

Accepted Answer

Regularly as part of your scanning routine

Answer

Only when changing lanes

Answer

Every 30 seconds exactly

Answer

Only in heavy traffic

Question 2

What is the proper way to test your service brakes after starting to drive?

Accepted Answer

Push the brake pedal firmly at about 5 mph

Answer

Slam the brakes at 30 mph

Answer

Pump the pedal three times while parked

Answer

Apply the parking brake while moving fast

Question 3

A driver operating a CMV in Alabama is caught texting while driving. What can happen after a second conviction within three years?

Accepted Answer

A 60-day CDL disqualification

Answer

A written warning only

Answer

A lifetime CDL ban

Answer

Nothing if driving intrastate

Question 4

When driving down a long, steep downgrade, which braking technique is recommended?

Accepted Answer

Use engine braking and apply brakes firmly to slow 5 mph below your safe speed, then release

Answer

Ride the brakes lightly the entire way down

Answer

Coast in neutral to reduce brake wear

Answer

Apply the parking brake intermittently

Question 5

What does it mean if your vehicle's low air pressure warning signal activates?

Accepted Answer

The air brake system pressure has dropped to a dangerous level

Answer

The tires are underinflated

Answer

The air conditioning has failed

Answer

The trailer is overloaded

Question 6

How much space should you keep in front of you for every 10 feet of vehicle length when traveling below 40 mph?

Accepted Answer

One second

Answer

Half a second

Answer

Two seconds

Answer

Three seconds

Question 7

Which of the following is true about using a CB radio or mobile phone while driving a CMV?

Accepted Answer

Hands-free mobile phone use is permitted

Answer

All radio communication is banned

Answer

Texting is allowed at stop lights

Answer

Holding a phone is fine under 25 mph