Knowledge Test with complete

DMV Class B License: General

Knowledge Test with complete solution

CDL medical certificates must be renewed every:

a) Year

b) Two Years

c) Four years Answer- b) Two Years

What should you do when you are driving at night?

a) Make sure you are driving slow enough so you can stop within the range of your

headlights in an emergency

b) Roll down your windows so that the fresh air will help keep you awake

c) If you are sleepy, drink coffee or other caffeine products Answer- a) Make sure you

are driving slow enough so you can stop within the range of your headlights in an emergency What are three things that add up to the total stopping distance for your truck or bus?

a) Attention distance, Reaction distance, slowing distance

b) Observation distance, response distance, braking distance

c) Perception distance, reaction distance, braking distance Answer- c) Perception

distance, reaction distance, breaking distance You are checking your steering and exhaust systems in a pre-trip inspection. Which of these problems, if found, should be fixed before the vehicle is driven?

a) Oil on the rod

b) Black smoke from the exhaust pipe

c) Steering wheel play of more than 10 percent (2'' on a 20'' steering wheel) Answer- c)

Steering wheel play of more than 10 percent (2'' on a 20'' steering wheel)

The purpose of retarders is to: 1 / 2

a) Apply extra braking power to the non-drive vehicles

b) Help prevent skids

c) Help slow the vehicle while driving and reduce brake wear Answer- c) Help slow the

vehicle while driving and reduce brake wear Which of these is especially true about your tires in hot weather?

a) You should check tire mounting and air pressure before driving

b) If the tire is too hot to touch, you should hose it down with water

c) A small amount of air should be let out so air pressure remains steady Answer- a)

You should check tire mounting and air pressure before driving Which of these is usually true about driving in tunnels?

a) Headlights are required by law

b) There may be strong winds when exiting

c) Speeds are limited to 30 MPH or less Answer- b) There may be strong winds when

exiting

When driving through work zones, you should:

a) Reduce speed only if workers are close to the roadway

b) Turn on your parking lights

c) Watch for sharp pavement drop-off Answer- c) Watch for sharp pavement drop-off

A pre-trip inspection should be completed:

a) At least once a week

b) If any problems occurred the last time the vehicle was operated

c) Before operating the vehicle Answer- c) Before operating the vehicle

Water can be safely used on which of these fires?

a) Electrical

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