CLP - Commercial Learner's Permit Basic Vehicle Control Questions and Answers

Question 1

When making a right turn in a large commercial vehicle, what is the proper technique to prevent the trailer from tracking over the curb?

Accepted Answer

Swing wide to the left before initiating the turn.

Answer

To execute a safe right turn and prevent the trailer from hitting the curb (off-tracking), the driver must create more space. This is achieved by moving the tractor slightly to the left into the next lane before starting the turn, a technique often called a 'button hook' or 'jug handle' turn.

Question 2

A driver is operating a 60-foot combination vehicle at 55 mph in clear, dry conditions. What is the MINIMUM following distance they should maintain?

Accepted Answer

7 seconds

Answer

The standard rule for minimum following distance is to allow at least one second for every 10 feet of vehicle length when traveling under 40 mph. For speeds over 40 mph, an additional second should be added. For a 60-foot vehicle, this is 6 seconds, plus 1 additional second for speed over 40 mph, totaling 7 seconds.

Question 3

When preparing to back a commercial vehicle, what is the MOST important first step a driver should take?

Accepted Answer

Get out of the vehicle and walk around it to check for hazards.

Answer

The most critical first step before backing is to perform a walk-around inspection of the area. This practice, often called G.O.A.L. (Get Out And Look), allows the driver to identify any obstacles, overhead clearances, ground conditions, or people that may not be visible in the mirrors.

Question 4

Which of the following describes the correct procedure for shifting up gears in a heavy vehicle with a manual transmission, a technique known as 'double clutching'?

Accepted Answer

Release the accelerator, press the clutch, shift to neutral, release the clutch, then press the clutch again and shift to the desired gear.

Answer

Double clutching is the standard method for shifting manual transmissions in most heavy commercial vehicles. The process involves using the clutch to shift into neutral and then again to shift into the next gear, allowing the engine and transmission speeds to synchronize.

Question 5

When adjusting the flat mirrors (West Coast mirrors) on a tractor, what is the recommended view?

Accepted Answer

They should show a small part of the trailer's side and the lane alongside and behind the vehicle.

Answer

Properly adjusted flat mirrors should show the lanes on both sides and to the rear of the vehicle. You should be able to see the very edge or rear corners of your trailer in the mirror to use as a reference point, ensuring you can monitor traffic and the trailer's position.

(CLP) Commercial Learner's Permit Practice Test

(CLP) Commercial Learner's Permit Practice Test

CLP - Commercial Learner's Permit Basic Vehicle Control Questions and Answers