Commercial Driver License Manual

Front 1

What is the most important reason for doing a vehicle inspection ?

Back 1

Safety for yourself and other road users .

Front 2

What things should you check during a trip ?

Back 2

Tires , wheels and rims

Brakes , Light and Reflectors. electrical connections to trailer , trailer coupling devices , cargo securment devices .

Front 3

Name some key steering systems parts ?

Back 3

Steering wheel , Tie rod , steering shaft, power steering cylinder , steering arm , drag link , spindle , steering knuckle , Gear box, Hydraulic fluid reservoir , pitman arm .

Front 4

Name some suspension defects?

Back 4

Hydraulic shock absorber , Leaf spring , vehicle frame , front axle hanger , frame , bearing plates, auxiliary spring , torque rod , axle , main spring , spring shackle .

Front 5

What three kinds of emergency equipment must you have ?

Back 5

Fire extinguishers , spare electrical fuses , Warning devices for parked vehicles .

Front 6

What is the minimum tread depth for front tired and for other tires ?

Back 6

4/32 inches Front

2/32 inch on other Tires

Front 7

Name some things you should check on the front of your vehicle during the walk around inspection?

Back 7

Condition of front axle , Condition of steering system , Condition of windshield , lights and reflectors .

Front 8

What should wheel bearing seals be checked for ?

Back 8

To make sure that theres no leaking

Front 9

How many red reflective triangles should you carry ?

Back 9

Three red reflective triangles

Front 10

How do you test hydraulic brakes for leaks ?

Back 10

Pump the break three times. Then apply firm pressure to the pedal and hold for five seconds . The pedal should not move .

Front 11

Why put the starter switch key in your pocket during the vehicle inspection ?

Back 11

To prevent someone from moving the truck while your underneath it and for your safety .

Front 12

Why should you back toward the driver's side ?

Back 12

So that you can see better .

Front 13

If stopped on a hill, how can start moving without rolling back ?

Back 13

Partly engage the clutch before you take your foot off the brake , put on the parking brake whenever necessary to keep from rolling back.

Front 14

When backing, why is it important to use a helper?

Back 14

Because there are blind spots you can't see.

Front 15

What's the most important hand signal that you and the helper should agree on?

Back 15

Signal for Stopping

Front 16

What are two special conditions where you should downshift?

Back 16

Before starting down a hill and Before entering a curve.

Front 17

When should you downshift automatic transmission?

Back 17

When going down grades.

Front 18

Retarders keep you from skidding when the road is slippery? True or False

Back 18

False

Front 19

What are the two ways to know when to shift?

Back 19

Use engine speed (rpm) and Use road speed (mph)

Front 20

How far ahead does the manual say you should look ?

Back 20

12 to 15 seconds ahead

Front 21

What are two main things to look for ahead ?

Back 21

Look for vehicles coming onto the highway, into your lane, or turning . Watch for brake lights from slowing vehicles .

Front 22

What's your most important way to see the sides and rear of your vehicle ?

Back 22

Mirror adjustment and Regular checks .

Front 23

What does "communicating" mean in safe driving ?

Back 23

To signal your intentions

Front 24

Where should you place reflectors when stopped on a divided highway ?

Back 24

Place warning devices 10 feet, 100 feet, 200 feet toward the approaching traffic .

Front 25

What three things add up to total stopping distance ?

Back 25

Pereception , Reaction, Braking .

Front 26

If you go twice as fast, will your stopping distance increase by two or four times ?

Back 26

Four times greater

Front 27

Empty trucks have the best braking. True or False ?

Back 27

False

Front 28

What is hydroplaning ?

Back 28

When Tires lose their contact with the road and have little or no traction.

Front 29

What is black ice ?

Back 29

A thin layer that is clear enough that you can see the road underneath it. It make the road look wet .

Front 30

How do you find out how many seconds of following distance space you have ?

Back 30

Wait until the vehicle ahead passes a shadow on the road, a pavement marking , or some other clear landmark.

Front 31

If you are driving a 30-foot vehicle at 55mph , how many seconds of following distance should you allow ?

Back 31

5 seconds

Front 32

You should decrease your following distance if sombody is following you too closely . True or false ?

Back 32

False

Front 33

If you swing wide to the left before turning right , another driver may try to pass you on the right . True or false?

Back 33

True

Front 34

What is hazard ?

Back 34

A hazard is any road condition or other road user ( Driver, bicyclist, pedestrian) that is a possible danger.

Front 35

Why make emergency plans when you see a hazard ?

Back 35

So that you will be a prepared , defensive driver who will improve your own safety as well as the safety of all road users

Front 36

What are some tips to follow so you won't become a distracted driver ?

Back 36

Turn off all communication devices , Do not type or read a text message on a mobile device while driving .

Front 37

How do you use in-vehicle communications equipment cautiously ?

Back 37

By familiarize yourself with your vehicle's features and equipment, before you get behind the wheel.

Front 38

How do you recognize a distracted driver?

Back 38

Vehicles that may drift over the lane , Vehicles traveling at inconsistent speeds. Drivers who are preoccupied , Drives who appear to be involved in conversations with their passengers .

Front 39

What is the difference between aggressive driving and road rage ?

Back 39

Aggressive driving is the act of operating a motor vehicle in a selfish, bold, or pushy manner , without regard for the rights or safety of others. Road rage is operating a motor vehicle with the intent of doing harm to others or physically assaulting a driver or their vehicle.

Front 40

What should you do when condronted with an aggressive driver ?

Back 40

Make every attempt to get out of their way. Avoid eye contact , ignore gestures and refuse to react to them .

Front 41

What are some things you can do to reduce your stress before and while you drive ?

Back 41

Listen to "easy listening" music. Take a deep breath and accept the delay. Try to imagine why he or she is driving that way . whever their reason, it has nothing to do with you .

Front 42

You should use low beams whenever you can ? True or false .

Back 42

False

Front 43

What should you do before you drive if you are drowsy ?

Back 43

Sleep before you drive

Front 44

What effects can wet brakes cause ? How can you avoid these problems ?

Back 44

Water in the breaks can cause the brakes to be weak, to apply unevenly, or to grab. This can cause lack of brakong power , wheel lockups, pulling to one side or the other , and jackknife if you pull a trailer.

Avoid driving through deep puddles or flowing water if possible . if not you should : slow down and place tramsmission in a low gear .

Front 45

You should let air out of hot tires so the pressure goes back to normal. True or False?

Back 45

False

Front 46

You can safely remove the radiator cap as long as the engine isnt overheated . True or False?

Back 46

False , Only remove when engine is cooled .

Front 47

What factors determine your selection of a "safe" speed when going down a long , steep downgrade ?

Back 47

Total weight of vehicle /Cargo, length of grade, steepness of grade , road conditions weather.

Front 48

Why should you be in the proper gear before starting down a hill ?

Back 48

Because you will not be able to downshift after your speed has already built up .

Front 49

Descibe the proper braking technique when going down a long , steep downgrade?

Back 49

Apply the brakes just hard enough to feel a definite slowdown. When your speed has been reduced to approximately five mph below your "safe" speed, release the brakes . ( this brake application should last for about three seconds ) when your speed has increased to your "safe" speed, repeat steps 1 and 2.

Front 50

What type of vehicles can get stuck on a railroad-highway crossing ?

Back 50

Low slung units , car carrier, moving van, possum belly livestock trailer , single axle tractor pulling a long trailer with its landing gear set to accomodate a tandom axle tractor.

Front 51

How long does it take for a typical tractor-trailer unit to clear a double track ?

Back 51

14 seconds to clear a single track and more than 15 seconds to clear a double track .

Front 52

Stopping is not always the safest thing to do in an emergency. True or False ?

Back 52

True

Front 53

What are some advantages of going right instead of left around an obstacle ?

Back 53

There is usually no one in the shoulder of the road, as there could be someone passing on your left, or oncoming traffic to the left.

Front 54

What is an escape ramp?

Back 54

" A traffic device that enables vehicles that are having braking problems to safely stop. It is typically a long, sand or gravel-filled lane adjacent to a road with a steep grade, and is designed to accommodate large trucks. The deep gravel allows the truck's momentum to be dissipated in a controlled and relatively harmless way, allowing the operator to stop it safely.

Front 55

If a tire blows out, you should put the breaks on hard to stop quickly . True or False ?

Back 55

False

Front 56

How do you know if vehicle has antilock brakes?

Back 56

They will have yellow malfunction lamps on the instrument panels and yellow malfunction lamps on the trailers. Dollies after 1998 are required to have a lamp on the left side.

Front 57

What is the proper braking technique when driving a vehicle with antilock brakes?

Back 57

use only the force necessary to stop safely an stay in control

Front 58

How do antilock brakes help you?

Back 58

help you avoid wheel lock up and maintain control

Front 59

What are some things to do at an accident scene to prevent another accident?

Back 59

protect the area, notify authorities, care for the injured

Front 60

Name two causes of tire fires?

Back 60

under inflated tires and duals that touch

Front 61

What kinds of fires is a B:C extinguisher not good for?

Back 61

fires in combustible metals

Front 62

When using your extinguisher, should you get as close as possible to the fire?

Back 62

No

Front 63

Name some causes of vehicle fires?

Back 63

tires, spilled fuel, short circuits due to damaged insulation, flammable cargo

Front 64

Common medicines for colds can make you sleepy. True or False

Back 64

True

Front 65

Coffee and a little fresh air will help a drinker sober up. True or False

Back 65

False

Front 66

What is a hazardous materials placard?

Back 66

placards are signs put on the outside of a vehicle that identify the hazard class of the cargo

Front 67

What are placards used ?

Back 67

they are used to warn others of hazardous materials