CDL Permit Written Test
What's the most important reason for doing a vehicle inspection? –
Safety
What things should you check during a trip? –
instruments, air pressure gauges, temperature gauges, pressure gauges,
voltmeter, mirrors, tires, cargo
Name some key steering system parts. –
gear box, tie rods, steering column
Name some suspension system defects. –
1/4 or more of leaves in spring assembly are broken; any leaf is missing; spring
hangers that allow movement of axle from proper position; leaking shock
absorbers
What 3 kinds of emergency equipment must you have? –
spare electrical fuses, 3 red reflective triangles, properly charged & rated fire
extinguisher
What is the minimum tread depth for front tires? –
4/32"
What is minimum tread depth for other tires? –
2/32"
Name some things you should check on the front of your vehicle during the walk-around
inspection. –
condition of: front axle, steering system, windshield; lights & reflectors; parking,
clearance & identification lights clean, operating & proper color; reflectors clean
& proper color; right front turn signal clean, operating & proper color
What should wheel bearing seals be checked for? –
That they're not leaking
How many red reflective triangles should you carry? –
3
How do you test hydraulic brakes for leaks? –
Pump brake pedal 3X, then apply firm pressure to pedal & hold for 5 seconds. The
pedal shouldn't move. It it does, there may be a leak or other problem.
Why put the starter switch key in your pocket during the pre-trip inspection? –
, To ensure that no one can start or move the vehicle while you're performing your
inspection.
Why should you back toward the driver's side? –
So you can see better. Backing toward the right side is very dangerous because
you can't see as well. If you back & turn toward driver's side, you can watch the
rear of your vehicle by looking out the side windows.
If stopped on a hill, how can you start moving without rolling back? –
Partly engage the clutch before taking foot off the brake. Put on parking brake
whenever necessary to keep from rolling back. Release parking brake only when
you have applied enough engine power to keep from rolling back. Speed up
slowly & gradually so vehicle doesn't jerk.
When backing, why is it important to use a helper? –
There are blind spots you can't see.
What's the most important hand signal that you and the helper should agree on? –
Stop
What are the 2 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? –
F
What are the 2 ways to know when to shift? –
Use engine speed (rpm) & use road speed.
How far ahead does the manual say you should look? –
12-15 seconds ahead
What are 2 main things to look for ahead? –
For vehicles coming onto highway, into your lane, or turning. Watch for brake
lights from slowing vehicles.
What's your most important ways to see the sides and rear of your vehicle? –
Check your mirrors for vehicles on either side of you and in back of you.
What does "communicating" mean in safe driving? –
Signaling your intentions & communicating your presence.
Where should your reflectors be placed when stopped on a divided highway? –
What's the most important reason for doing a vehicle inspection? –
Safety
What things should you check during a trip? –
instruments, air pressure gauges, temperature gauges, pressure gauges,
voltmeter, mirrors, tires, cargo
Name some key steering system parts. –
gear box, tie rods, steering column
Name some suspension system defects. –
1/4 or more of leaves in spring assembly are broken; any leaf is missing; spring
hangers that allow movement of axle from proper position; leaking shock
absorbers
What 3 kinds of emergency equipment must you have? –
spare electrical fuses, 3 red reflective triangles, properly charged & rated fire
extinguisher
What is the minimum tread depth for front tires? –
4/32"
What is minimum tread depth for other tires? –
2/32"
Name some things you should check on the front of your vehicle during the walk-around
inspection. –
condition of: front axle, steering system, windshield; lights & reflectors; parking,
clearance & identification lights clean, operating & proper color; reflectors clean
& proper color; right front turn signal clean, operating & proper color
What should wheel bearing seals be checked for? –
That they're not leaking
How many red reflective triangles should you carry? –
3
How do you test hydraulic brakes for leaks? –
Pump brake pedal 3X, then apply firm pressure to pedal & hold for 5 seconds. The
pedal shouldn't move. It it does, there may be a leak or other problem.
Why put the starter switch key in your pocket during the pre-trip inspection? –
, To ensure that no one can start or move the vehicle while you're performing your
inspection.
Why should you back toward the driver's side? –
So you can see better. Backing toward the right side is very dangerous because
you can't see as well. If you back & turn toward driver's side, you can watch the
rear of your vehicle by looking out the side windows.
If stopped on a hill, how can you start moving without rolling back? –
Partly engage the clutch before taking foot off the brake. Put on parking brake
whenever necessary to keep from rolling back. Release parking brake only when
you have applied enough engine power to keep from rolling back. Speed up
slowly & gradually so vehicle doesn't jerk.
When backing, why is it important to use a helper? –
There are blind spots you can't see.
What's the most important hand signal that you and the helper should agree on? –
Stop
What are the 2 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? –
F
What are the 2 ways to know when to shift? –
Use engine speed (rpm) & use road speed.
How far ahead does the manual say you should look? –
12-15 seconds ahead
What are 2 main things to look for ahead? –
For vehicles coming onto highway, into your lane, or turning. Watch for brake
lights from slowing vehicles.
What's your most important ways to see the sides and rear of your vehicle? –
Check your mirrors for vehicles on either side of you and in back of you.
What does "communicating" mean in safe driving? –
Signaling your intentions & communicating your presence.
Where should your reflectors be placed when stopped on a divided highway? –
