CLP Managing Space and Speed 2

Question 1

When following another vehicle on a highway at 55 mph, what is the minimum following distance recommended for a CMV under ideal conditions?

Accepted Answer

6 seconds

Answer

At 55 mph, CMV drivers should maintain at least one second per 10 feet of vehicle length plus an extra second, which typically works out to 6 or more seconds.

Question 2

A loaded tanker truck is traveling at 60 mph. Compared to an empty tanker at the same speed, how does stopping distance compare?

Accepted Answer

Loaded may take longer to stop due to liquid surge

Answer

Liquid surge in a loaded tanker can extend stopping distance because the shifting liquid pushes the vehicle forward even after braking.

Question 3

You are driving a 60-foot CMV at 55 mph. At minimum, how many seconds of following distance should you maintain?

Accepted Answer

7 seconds

Answer

The rule is one second per 10 feet of vehicle length plus one second for speeds above 40 mph: 60 ft = 6 seconds + 1 = 7 seconds.

Question 4

What is the primary reason CMVs require more stopping distance on wet roads compared to dry roads?

Accepted Answer

Tires lose traction, increasing stopping distance by up to 40%

Answer

Wet pavement significantly reduces tire traction, which can increase stopping distance for a CMV by roughly one-third or more.

Question 5

When should a CMV driver begin reducing speed before entering a curve?

Accepted Answer

Well before the curve

Answer

Braking in a curve can cause loss of control, so CMV drivers must slow to a safe speed before entering the curve.

(CLP) Commercial Learner's Permit Practice Test

(CLP) Commercial Learner's Permit Practice Test

CLP Managing Space and Speed 2