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CDL Class B Quiz Questions and answers | With complete solution 2024/25
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CDL Class B Quiz Questions and answers | With complete solution 2024/25
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CDL Class B Quiz Questions andanswers | With complete solution
2024/25
What is the most important reason for doing a vehicle inspection? - Safety
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What things should you check during a trip? - instruments, air pressure gauge, temp
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gauge, pressure gauge, ammeter/voltmeter, mirrors, tires, cargo/ cargo covers, lights.
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Name some key steering system parts. - steering wheel, tie rod, steering shaft, hydraulic
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fluid reservoir, gear box, pitman arm, drag link, steering knuckle, spindle, steering arm,
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power steering cylinder
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Name some suspension system defects. - spring hangers that allow movement of axle
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from proper position, cracked or broken spring hangers, missing or broken leaves in any
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leaf spring, leaking shock absorbers, air suspension systems that are damaged and or
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leaking, any parts of the suspension or frame that is cracked or broken
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What three kinds of emergency equipment must you have? - fire extinguisher, 3 reflective
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triangles, spare fuses
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ii What is the minimum tread depth for front tires? - 4/32 inch
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ii For other tires? - 2/32 inch
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ii Why should you back toward the driver's side? - Better visibility
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If stopped on a hill, how can you start moving without rolling back? - partly engage the
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clutch before you take your foot off the brake, put on the parking brake whenever
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necessary to keep from rolling back
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When backing, why is it important to use a helper? - There are blind spots you won't be
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able to see.
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ii What's the most important hand signal that you and your helper should agree on? - STOP
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What are the two special conditions where you should downshift? - before starting down a
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hill, before entering a curve
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ii When should you downshift automatic transmissions? - when going down grades
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, Retarders keep you from skidding when the road is slippery. True or false? - FALSE.
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When your drive wheels have poor traction, the retarder may actually CAUSE them to skid
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and should be turned off whenever the road is wet, icy, or snow covered
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ii What are the two ways to know when to shift? - RPMs or speed
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ii How far ahead does the manual say you should look? - 12 to 15 seconds
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What are two main things to look ahead for? - Look for vehicles coming onto the highway,
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into your lane, or turning. / Watch for brake lights from slowing vehicles
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ii What's your most important way to see the sides and rear of your vehicle? - Mirrors
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ii What does "communicating" mean in safe driving? - Signaling your intentions
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Where should your reflectors be placed when stopped on a divided highway? - 10 feet,
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100 feet, and 200 feet toward the approaching traffic
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What three things add up to total stopping distance? - perception distance, reaction
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distance, braking distance
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If you go twice as fast, will your stopping distance increase by twice or four times? - Four
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times
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Empty trucks have the best braking. True or false? - FALSE. The brakes, tires, springs,
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and shock absorbers on heavy vehicles are designed to work best when the vehicle is fully
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loaded. Empty trucks require greater stopping distances because an empty vehicle has
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less traction.
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What is hydroplaning? - Tires ""water-skiing"" across the road. Tires lose their contact
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with the road and have little or no traction.
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ii What is "black ice?" - a thin layer of ice that you can see the road through
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How do you find out how many seconds of following distance space you have? - 1 second
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for every 10 feet of vehicle length under 40 mph, over 40 mph add a second per 10 feet
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If you are driving a 30-foot vehicle at 55 MPH, how many seconds of following distance
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should you allow? - Five
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You should decrease your following distance if somebody is following you too closely.
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True or false? - TRUE
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If you swing wide to the left before turning right, another driver may try to pass you on the
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right. True or false? - TRUE
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