TEXAS CDL CLASS B QUIZ QUESTIONS | COMPLETE STUDY GUIDE, PRACTICE TEST
& ANSWERS 2026/2027
What is the most important reason for doing a vehicle inspection? - ANS ✔✔Safety
What things should you check during a trip? - ANS ✔✔instruments, air pressure gauge, temp
gauge, pressure gauge, ammeter/voltmeter, mirrors, tires, cargo/ cargo covers, lights.
Name some key steering system parts. - ANS ✔✔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. - ANS ✔✔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? - ANS ✔✔fire extinguisher, 3
reflective triangles, spare fuses
What is the minimum tread depth for front tires? - ANS ✔✔4/32 inch
For other tires? - ANS ✔✔2/32 inch
Why should you back toward the driver's side? - ANS ✔✔Better visibility
If stopped on a hill, how can you start moving without rolling back? - ANS ✔✔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? - ANS ✔✔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? - ANS
✔✔STOP
What are the two special conditions where you should downshift? - ANS ✔✔before starting
down a hill, before entering a curve
When should you downshift automatic transmissions? - ANS ✔✔when going down grades
Retarders keep you from skidding when the road is slippery. True or false? - ANS ✔✔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? - ANS ✔✔RPMs or speed
How far ahead does the manual say you should look? - ANS ✔✔12 to 15 seconds
What are two main things to look ahead for? - ANS ✔✔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? - ANS ✔✔Mirrors
What does "communicating" mean in safe driving? - ANS ✔✔Signaling your intentions
& ANSWERS 2026/2027
What is the most important reason for doing a vehicle inspection? - ANS ✔✔Safety
What things should you check during a trip? - ANS ✔✔instruments, air pressure gauge, temp
gauge, pressure gauge, ammeter/voltmeter, mirrors, tires, cargo/ cargo covers, lights.
Name some key steering system parts. - ANS ✔✔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. - ANS ✔✔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? - ANS ✔✔fire extinguisher, 3
reflective triangles, spare fuses
What is the minimum tread depth for front tires? - ANS ✔✔4/32 inch
For other tires? - ANS ✔✔2/32 inch
Why should you back toward the driver's side? - ANS ✔✔Better visibility
If stopped on a hill, how can you start moving without rolling back? - ANS ✔✔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? - ANS ✔✔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? - ANS
✔✔STOP
What are the two special conditions where you should downshift? - ANS ✔✔before starting
down a hill, before entering a curve
When should you downshift automatic transmissions? - ANS ✔✔when going down grades
Retarders keep you from skidding when the road is slippery. True or false? - ANS ✔✔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? - ANS ✔✔RPMs or speed
How far ahead does the manual say you should look? - ANS ✔✔12 to 15 seconds
What are two main things to look ahead for? - ANS ✔✔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? - ANS ✔✔Mirrors
What does "communicating" mean in safe driving? - ANS ✔✔Signaling your intentions
