CLP General Knowledge Core Concepts 2

Question 1

What is the minimum tread depth required for front tires on a commercial motor vehicle?

Accepted Answer

4/32 inch

Answer

Front tires on a CMV must have a minimum tread depth of 4/32 inch; all other tires require 2/32 inch.

Question 2

When should you use your vehicle's low beam headlights instead of high beams?

Accepted Answer

Within 500 feet of an oncoming vehicle or 300 feet behind another vehicle

Answer

You must dim to low beams within 500 feet of an approaching vehicle and within 300 feet when following another vehicle.

Question 3

A placarded hazardous materials vehicle must park how far from an open flame?

Accepted Answer

300 feet

Answer

Vehicles carrying hazardous materials must keep at least 300 feet from an open fire unless the road requires them to pass.

Question 4

Which of the following is NOT a sign of tire failure while driving?

Accepted Answer

A sudden increase in fuel economy

Answer

Improved fuel economy is not associated with tire failure; thumping, pulling, and sluggishness are all warning signs.

Question 5

What does a 'gross vehicle weight rating' (GVWR) represent?

Accepted Answer

The maximum loaded weight the manufacturer specifies for a single vehicle

Answer

GVWR is the maximum loaded weight a vehicle is designed to handle, as set by the manufacturer.

(CLP) Commercial Learner's Permit Practice Test