CDL CLASS B GENERAL KNOWLEDGE TEST WITH VERIFIED ANSWERS
1. What is the most important safety for yourself and for other road users.
reason for doing a vehicle in-
spection?
2. What things should you Watch gauges for signs of trouble.
check during a trip? Tires, wheels and rims. Brakes. Lights and
reflectors. Brake and electrical connections
to trailer. Trailer coupling devices. Cargo se-
curement devices.
3. Name some key steering steering wheel
system parts. steering wheel shaft
steering gear box
pitman arm
drag link
steering ring knuckle spindle
steering arms
4. Name some suspension sys- string hangers that allow movement of the
tem defects. axle from proper position.
cracked our broken leaf spring hangers,
missing or broken leaves in a multi-leaf
spring or leaves that have shifted so they
might hit a tire or other part
leaking shock absorbers
torque rod or arm, u-bolts, spring hangers or
other axle positioning parts that are cracked,
damaged or missing.
air suspension systems that are damaged
and/or leaking. any loose, cracked, or broken
missing frame members.
5. What three kinds of emer- Safety equipment
gency equipment must you emergency phone numbers
have? accident reporting kit
6. What is the minimum tread 4/32-inch tread depth for front tires, 2/32 inch
depth for front tires? For oth- depth for other tires
er tires?
, CDL CLASS B GENERAL KNOWLEDGE TEST WITH VERIFIED ANSWERS
7. Name some things you front axle
should check on the front of steering system
your vehicle during the walk windshield
around inspection. lights and reflectors
8. What should wheel bearing leaking.
seals be checked for?
9. How many red reflective tri- Three red reflective triangles
angles should you carry?
10. How do you test hydraulic Pump the brakes 3 times
brakes for leaks? apply firm pressure to the pedal and hold for
five seconds
If the pedal moves there may be a leak
11. Why put the starter switch So that no-one starts the bus while you are
key in your pocket during the pre-tripping.
pre-trip inspection?
12. How far ahead does the man- 12-15 seconds, 1 block, 1 mile
ual say you should look?
13. What are two main things to stopping
look for ahead? lane changes
14. What's your most important mirrors
way to see the sides and rear
of your vehicle?
15. What does "communicating" signalling
mean in safe driving?
16. Where should your reflec- 10
tors be placed when stopped 100
on a divided highway? 200
17. What three things add up to Perception Distance + Reaction Distance +
total stopping distance? Braking Distance = Total Stopping Distance.
1. What is the most important safety for yourself and for other road users.
reason for doing a vehicle in-
spection?
2. What things should you Watch gauges for signs of trouble.
check during a trip? Tires, wheels and rims. Brakes. Lights and
reflectors. Brake and electrical connections
to trailer. Trailer coupling devices. Cargo se-
curement devices.
3. Name some key steering steering wheel
system parts. steering wheel shaft
steering gear box
pitman arm
drag link
steering ring knuckle spindle
steering arms
4. Name some suspension sys- string hangers that allow movement of the
tem defects. axle from proper position.
cracked our broken leaf spring hangers,
missing or broken leaves in a multi-leaf
spring or leaves that have shifted so they
might hit a tire or other part
leaking shock absorbers
torque rod or arm, u-bolts, spring hangers or
other axle positioning parts that are cracked,
damaged or missing.
air suspension systems that are damaged
and/or leaking. any loose, cracked, or broken
missing frame members.
5. What three kinds of emer- Safety equipment
gency equipment must you emergency phone numbers
have? accident reporting kit
6. What is the minimum tread 4/32-inch tread depth for front tires, 2/32 inch
depth for front tires? For oth- depth for other tires
er tires?
, CDL CLASS B GENERAL KNOWLEDGE TEST WITH VERIFIED ANSWERS
7. Name some things you front axle
should check on the front of steering system
your vehicle during the walk windshield
around inspection. lights and reflectors
8. What should wheel bearing leaking.
seals be checked for?
9. How many red reflective tri- Three red reflective triangles
angles should you carry?
10. How do you test hydraulic Pump the brakes 3 times
brakes for leaks? apply firm pressure to the pedal and hold for
five seconds
If the pedal moves there may be a leak
11. Why put the starter switch So that no-one starts the bus while you are
key in your pocket during the pre-tripping.
pre-trip inspection?
12. How far ahead does the man- 12-15 seconds, 1 block, 1 mile
ual say you should look?
13. What are two main things to stopping
look for ahead? lane changes
14. What's your most important mirrors
way to see the sides and rear
of your vehicle?
15. What does "communicating" signalling
mean in safe driving?
16. Where should your reflec- 10
tors be placed when stopped 100
on a divided highway? 200
17. What three things add up to Perception Distance + Reaction Distance +
total stopping distance? Braking Distance = Total Stopping Distance.
