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

2/32 inch

Answer

6/32 inch

Answer

8/32 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

When driving faster than 55 mph

Answer

Only in heavy rain or fog

Answer

Whenever driving on a two-lane road

Question 3

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

Accepted Answer

300 feet

Answer

100 feet

Answer

200 feet

Answer

500 feet

Question 4

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

Accepted Answer

A sudden increase in fuel economy

Answer

Thumping or vibration

Answer

Steering that pulls to one side

Answer

The vehicle feels sluggish

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

The maximum weight a vehicle can legally tow

Answer

The combined weight of cargo only

Answer

The weight of the vehicle when completely empty

Question 6

What is the purpose of the 'glad hands' on a commercial vehicle?

Accepted Answer

To connect the air supply and service brake lines between a tractor and trailer

Answer

To secure the fifth wheel coupling

Answer

To lock the trailer's landing gear

Answer

To attach safety chains during coupling

Question 7

Under federal hours-of-service rules, a property-carrying driver using the 60-hour/7-day limit must take how many consecutive hours off before restarting the 60-hour count?

Accepted Answer

34 hours

Answer

8 hours

Answer

10 hours

Answer

24 hours