CDL Practice Exam 1: Free General Knowledge Quiz | ExamsLib

Question 1

What is the main purpose of a pre-trip vehicle inspection?

Accepted Answer

To wash the vehicle before a trip

Answer

To find problems that could cause a breakdown or crash before they happen

Answer

To fill out paperwork required only at the end of the day

Answer

To check the driver's personal belongings

Question 2

Which of these should a driver check during a pre-trip inspection of the engine compartment?

Accepted Answer

Oil level, coolant level, and belts

Answer

The radio station presets

Answer

The color of the seat covers

Answer

The number of passengers allowed

Question 3

During a pre-trip inspection, why should a driver check tire tread depth?

Accepted Answer

Worn tread increases the risk of a blowout or poor traction

Answer

Tread depth affects the paint color of the tire

Answer

Tread depth determines the radio signal strength

Answer

Tread depth is only checked once a year

Question 4

What should a driver do if a pre-trip inspection reveals a cracked windshield that blocks the view?

Accepted Answer

Ignore it if the crack is small

Answer

Have it repaired or replaced before driving

Answer

Cover it with tape and continue

Answer

Only report it at the end of the week

Question 5

What is the purpose of mirrors on a large commercial vehicle?

Accepted Answer

To help the driver see the rear and sides of the vehicle, including blind spots

Answer

To make the vehicle look better

Answer

To replace the need for turn signals

Answer

To increase fuel economy

Question 6

How often should a driver check mirrors while driving a commercial motor vehicle?

Accepted Answer

Only when merging onto a highway

Answer

Regularly and frequently throughout the trip

Answer

Only at the start of the trip

Answer

Only when backing up

Question 7

What is a 'blind spot' on a large commercial vehicle?

Accepted Answer

An area behind the vehicle with no cargo

Answer

An area around the vehicle that the driver cannot see using mirrors or direct vision

Answer

A spot on the windshield that is tinted

Answer

The area directly above the cab

Question 8

Why do large commercial vehicles have bigger blind spots than passenger cars?

Accepted Answer

Because commercial vehicles are longer, wider, and taller

Answer

Because commercial drivers do not use mirrors

Answer

Because passenger cars have no blind spots at all

Answer

Because commercial vehicles have tinted windows

Question 9

What should a driver do before changing lanes in a commercial motor vehicle?

Accepted Answer

Signal only after starting the lane change

Answer

Check mirrors, signal, and check blind spots before moving over

Answer

Assume other drivers will move out of the way

Answer

Change lanes quickly to avoid slower traffic

Question 10

What is the purpose of using turn signals well before a turn or lane change?

Accepted Answer

To warn other drivers of the intended movement so they can react safely

Answer

To satisfy a state inspection requirement only

Answer

To activate the vehicle's hazard lights automatically

Answer

To reduce fuel consumption