CDL Class B Quiz Questions
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
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
