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CDL Class B Quiz Questions with Answers 2024
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CDL Class B Quiz Questions with Answers 2024
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CDL Class B Quiz Questionswith Answers 2024
What is the most important reason for doing a vehicle inspection? - -Safety
- What things should you check during a trip? - -instruments, air pressure
gauge, temp gauge, pressure gauge, ammeter/voltmeter, mirrors, tires,
cargo/ cargo covers, lights.
- Name some key steering system parts. - -steering wheel, tie rod, steering
shaft, hydraulic fluid reservoir, gear box, pitman arm, drag link, steering
knuckle, spindle, steering arm, power steering cylinder
- Name some suspension system defects. - -spring hangers that allow
movement of axle from proper position, cracked or broken spring hangers,
missing or broken leaves in any leaf spring, leaking shock absorbers, air
suspension systems that are damaged and or leaking, any parts of the
suspension or frame that is cracked or broken
- What three kinds of emergency equipment must you have? - -fire
extinguisher, 3 reflective triangles, spare fuses
- What is the minimum tread depth for front tires? - -4/32 inch
- For other tires? - -2/32 inch
- Why should you back toward the driver's side? - -Better visibility
- If stopped on a hill, how can you start moving without rolling back? - -
partly engage the clutch before you take your foot off the brake, put on the
parking brake whenever necessary to keep from rolling back
- When backing, why is it important to use a helper? - -There are blind spots
you won't be able to see.
- What's the most important hand signal that you and your helper should
agree on? - -STOP
- What are the two special conditions where you should downshift? - -before
starting down a hill, before entering a curve
- When should you downshift automatic transmissions? - -when going down
grades
, - Retarders keep you from skidding when the road is slippery. True or false?
- -FALSE. When your drive wheels have poor traction, the retarder may
actually CAUSE them to skid and should be turned off whenever the road is
wet, icy, or snow covered
- What are the two ways to know when to shift? - -RPMs or speed
- How far ahead does the manual say you should look? - -12 to 15 seconds
- What are two main things to look ahead for? - -Look for vehicles coming
onto the highway, into your lane, or turning. / Watch for brake lights from
slowing vehicles
- What's your most important way to see the sides and rear of your vehicle?
- -Mirrors
- What does "communicating" mean in safe driving? - -Signaling your
intentions
- Where should your reflectors be placed when stopped on a divided
highway? - -10 feet, 100 feet, and 200 feet toward the approaching traffic
- What three things add up to total stopping distance? - -perception
distance, reaction distance, braking distance
- If you go twice as fast, will your stopping distance increase by twice or four
times? - -Four times
- Empty trucks have the best braking. True or false? - -FALSE. The brakes,
tires, springs, and shock absorbers on heavy vehicles are designed to work
best when the vehicle is fully loaded. Empty trucks require greater stopping
distances because an empty vehicle has less traction.
- What is hydroplaning? - -Tires ""water-skiing"" across the road. Tires lose
their contact with the road and have little or no traction.
- What is "black ice?" - -a thin layer of ice that you can see the road through
- How do you find out how many seconds of following distance space you
have? - -1 second for every 10 feet of vehicle length under 40 mph, over 40
mph add a second per 10 feet
- If you are driving a 30-foot vehicle at 55 MPH, how many seconds of
following distance should you allow? - -Five
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