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CDL > GENERAL KNOWLEGDE > Flashcards

GENERAL KNOWLEGDE Flashcards

1
Q

As the blood alcohol concentration (BAC) goes up, what happens?

A

judgement and self control are affected

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2
Q

Implied consent means

A

you’ve giving consent to be tested for alcohol in your blood

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3
Q

The total weight of the powered unit, the trailer, and the cargo is called

A

gross combination weight

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4
Q

If you do not have a CB radio, what is the 1st thing you should do at an accident scene?

A

protect the area

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5
Q

Which of these is true about mirror adjustment?

A

you should adjust your mirrors prior to starting a trip

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6
Q

Brake fade

A

can be caused by the brakes getting very hot

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7
Q

On which fires can water be used

A

tires

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8
Q

Which of these statements about engine overheating is true?

A

you should never remove the radiator cap on a pressurized system until it has cooled

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9
Q

Which of these is not a danger of rough acceleration?

A

tire damage

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10
Q

Which of these is true about the use of a heater?

A

when driving in winter weather, you should check that the heater is working properly

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11
Q

What is the proper way to hold the steering wheel?

A

with both hands firmly, on opposite sides of the wheel

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12
Q

If you have a heavy load that is slowing you down on an upgrade, you should

A

shift into a lower gear

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13
Q

Which of these is not a danger when an automatic transmission is forced into a low gear at high speeds?

A

loss of steering control

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14
Q

If possible, a helper should be used to help back your vehicle:

A

whenever you have to back

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15
Q

When looking ahead of your vehicle while driving you should look

A

back and forth, near and far

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16
Q

How far ahead of the vehicle should the driver look while driving?

A

12-15 seconds

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17
Q

Which of these is the proper way to signal to change lanes?

A

signal early and change lanes slowly and smoothly

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18
Q

You should signal continuously while turning because:

A

you need both hands on the wheel to turn safely

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19
Q

The primary cause of fatal crashes is:

A

driving too fast

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20
Q

You should try to park so that

A

you can pull forward when you leave

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21
Q

You are driving a vehicle at 45 mph on dry pavement. About how much total
stopping distance will you need to bring it to a stop?

A

the length of a football field

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22
Q

When driving at night, you should use your low beams when an oncoming vehicle is within

A

500 ft

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23
Q

You are driving in an area with few streetlights on a clear night. If you cannot see well with your headlights, which of these actions would help?

A

use your high beams when legal and keep your interior light off

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24
Q

What happens to tar in road pavement when it gets extremely hot?

A

it bleeds, making the road surface slippery

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25
Q

What is the best advice for drivers when a heavy fog occurs?

A

park at a truck stop or rest area until the fog has lifted

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26
Q

Which of these statements about cold weather driving is true?

A

windshield washer antifreeze should be used

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27
Q

Strong winds most affect driving

A

upon exiting tunnels

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28
Q

Perception distance is the distance your vehicle travels from the time:

A

the eyes see a hazard to the time the brain knows it is a hazard

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29
Q

You are driving on a two lane road. An oncoming driver drifts into your lane
headed straight for you. Which of these is most often the best action to take?

A

steer to the right

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30
Q

You can see a marking on a vehicle ahead of you. The marking is a red triangle with an orange center. What does the marking mean?

A

it may be a slow moving vehicle

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31
Q

Hydroplaning

A

most likely occurs when tire pressure is low

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32
Q

What should you do when your vehicle hydroplanes?

A

release accelerator

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33
Q

In the event of a rear tire failure, dual rear tires

A

usually prevent fishtailing

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34
Q

Which of these is correct about emergency or evasive action?

A

in order to turn quickly you must have a firm grip on the steering wheel

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35
Q

Most serious skids result from

A

driving too fast for conditions

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36
Q

Over length, over width, or over weight loads

A

require a special transit permit

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37
Q

Containerized loads

A

are generally used when freight is carried part way by rail or ship

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38
Q

Which of these statements about an inspection of suspension components is true?

A

axle mounts should be checked at each point where they are secured on the vehicle frame and axle

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39
Q

Should brake adjustment be checked often?

A

yes, because brakes can get out of adjustment when they are used a lot

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40
Q

Which of these is NOT part of the pre-trip inspection of the engine compartment?

A

valve clearance

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41
Q

A full stop is required at a railroad grade crossing when

A

the nature of the cargo makes a stop mandatory under state, or for incompatible
items

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42
Q

You do NOT have a Hazard Materials Endorsement on your commercial driver’s license. You can drive a vehicle hauling hazardous materials when

A

the vehicle doesn’t require placards

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43
Q

You are driving a heavy vehicle with a manual transmission. You have to stop the vehicle on the shoulder while driving on an uphill grade. Which of these is a good rule to follow when putting it back in motion up the grade?

A

use parking brake to hold the vehicle

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44
Q

If your brakes fail on a downgrade, you must first:

A

look outside your vehicle for another means of slowing it

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45
Q

To help you stay alert while driving, you should

A

Take short breaks before you get drowsy

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46
Q

Which of the following is a good way to react to an aggressive driver?

A

give the driver the benefit of the doubt

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47
Q

If you must use a cell phone while driving, you should

A

pull off the road onto a safe and legal position

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48
Q

Which of these statements about staying alert to drive is true?

A

sleep is the only thing that can overcome fatigue

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49
Q

Medicines used to treat the common cold:

A

often makes you drowsy and thus should not be used while driving

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50
Q

Which of these statements about drugs is true?

A

use of drugs can lead to accidents and/or arrest

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51
Q

Which of these statements about causes of vehicle fires is true?

A

poor trailer ventilation can cause cargo to catch on fire

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52
Q

What will help keep an engine cool in hot weather?

A

making sure the engine has the right amount of oil

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53
Q

Which of these statements about marking a stopped vehicle is true?

A

if a hill or curve keeps others from seeing the vehicle within 500 feet, the rear triangle should be moved back down the road to give adequate warning

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54
Q

Which of these do not provide extra gears on some trucks?

A

automatic transmissions

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55
Q

Which of these actions is not recommended for a left turn?

A

start in the inside lane and swing right as you turn

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56
Q

What is counter steering?

A

turning the wheel back in the opposite direction after steering to avoid an
emergency

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57
Q

Which of these statements about downshifting is true?

A

when you downshift for a curve, you should do so before you enter the curve

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58
Q

Why is it important to shift gears correctly?

A

keep control of the vehicle

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59
Q

Backing a commercial vehicle is

A

always dangerous

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60
Q

You see a car approaching from the rear; the next time you check your mirror the car is gone. You wish to change lanes. You should:

A

wait to change lanes until you are sure the car isn’t in your blind spot

61
Q

The distance you should look ahead of your vehicle while driving is _ of a mile at highway speed

A

1/4

62
Q

You are driving a heavy vehicle. You must exit a highway using an off ramp that curves downhill. You should:

A

slow down to a safe speed before the curve

63
Q

When you are driving on a snow packed road you should reduce your speed by at least

A

1/2

64
Q

Merging onto a road is safest if you

A

wait for a large enough gap in traffic to enter the road

65
Q

If you are being tailgated you should

A

increase your following distance

66
Q

What should you do if a car coming toward you at night keeps its high beams on?

A

look at the right side of the road

67
Q

The road you are traveling on becomes very slippery due to glare ice. Which of these is a good thing to do in such a situation?

A

stop driving as soon as you can safely do so

68
Q

Your brakes can get wet when driving through heavy rain. What can this cause when the brakes are applied?

A

trailer jackknife

69
Q

You should avoid driving through deep puddles or flowing water, but if you must which of these steps can help keep your brakes working?

A

gently putting on the brakes while driving through the water

70
Q

When driving through work zones you should:

A

use your 4-way flashers or brake lights to warn others

71
Q

The best drivers are those that watch and prepare for hazards. This is called being:

A

defensive

72
Q

Which of the below is not a characteristic of a front tire failure?

A

vehicle fishtail

73
Q

When hydraulic brakes fail while driving, what action should you take?

A

pump the brake pedal to generate pressure

74
Q

Your vehicle has hydraulic brakes. While traveling on level road you press the pedal and it goes to the floor. Which of these statements is true?

A

pumping the pedal may bring pressure up so you can stop the vehicle

75
Q

Which of these happens when a tire blows out at highway speed?

A

a vibrating feeling

76
Q

How do you correct a rear wheel acceleration skid?

A

stop accelerating

77
Q

Which of these systems should receive extra attention during cold weather inspections?

A

exhaust

78
Q

Can federal inspectors inspect your truck or bus?

A

yes and they can put it out of service if it is unsafe

79
Q

Which of these statements about tires is true?

A

you should inspect your tires every 2 hours or every 100 miles when driving in hot weather

80
Q

If you are not sure what to use to put out hazardous materials fires, you should:

A

wait on qualified firefighters

81
Q

When you are driving on grades, which of these is the best way to choose a safe speed?

A

based on your vehicle and its cargo, select a safe speed that is within the posted speed

82
Q

When confronted by an aggressive driver, the very first thing you should do is:

A

make every attempt to get out of their way

83
Q

In bad weather, many cars tailgate large vehicles. What should you do?

A

increase your following distance so you can avoid quick maneuvers

84
Q

Which of these is a good thing to remember about drinking alcohol?

A

alcohol affects judgment and self control, which are necessary for safe driving

85
Q

Which of these statements about vehicle fires is true?

A

a burning tire should be cooled with water

86
Q

Optional safety equipment may include emergency numbers, tire chains, and:

A

tire changing equipment

87
Q

After starting the engine

A

the coolant temperature gauge should begin a gradual rise to the normal range

88
Q

Retarders can be used:

A

only where permitted by the law

89
Q

Which of these statements about brakes is true?

A

the heavier a vehicle or the faster it is moving the more heat the brakes have to absorb to stop it

90
Q

What is the term for a commercial vehicle’s habit of swinging wide in a turn?

A

off tracking

91
Q

Which of these statements about double clutching and shifting are true?

A

you can use the tachometer to tell when to shift

92
Q

According to the driver’s manual, why should you limit the use of your horn?

A

it can startle other drivers

93
Q

You are driving a vehicle that could be safely driven at 55, but traffic is heavy and moving at 35 even though the limit is 55. What is the safest speed for you?

A

35 MPH

94
Q

Whenever you double your speed, how much more distance does it take to stop?

A

4x the distance

95
Q

How does vehicle weight effect stopping?

A

empty trucks can take longer to stop than loaded ones, but this is usually not the case for buses

96
Q

Which of these statements about overhead clearance is true?

A

the weight of a vehicle changes its height

97
Q

Which of these is a good thing to do when driving at night?

A

keep your speed slow enough that you can stop in the range of your headlights

98
Q

Which vehicle will be most affected by strong winds?

A

a set of empty doubles

99
Q

When the roads are slippery, you should:

A

make turns as gently as possible

100
Q

Which of these is not true about emergency braking?

A

it is not important how you brake in an emergency

101
Q

Where or how is cargo blocking used?

A

in the front, sides, and back of cargo, usually at the floor

102
Q

Bridge formulas

A

permit less maximum axle weight for axles that are closer together

103
Q

You are checking your brakes and suspension in a pre trip inspection. Which of these statements is true?

A

brake shoes should not have oil, grease, or fluid on them

104
Q

What is the most important reason to inspect your truck or bus?

A

safety

105
Q

Drivers of trucks and tractors with cargo must check the securement of the cargo within how many miles of starting the trip?

A

50 miles

106
Q

You do not have the hazardous materials endorsement on your CDL. You are asked to haul a load of hazardous materials requiring placards. You should:

A

refuse to haul load

107
Q

What is the first thing you should do if your brakes fail while going down a hill?

A

get off the road asap

108
Q

Escape ramps

A

should be used by any driver who looses braking power

109
Q

Which of the following best describes how sleep debt can be paid off?

A

it can only be paid off by sleeping

110
Q

If you have been drinking alcohol, you should:

A

wait for it to wear off

111
Q

When a doctor prescribes medication for you and you know you will be driving, you should

A

ask the doctor if the medication will affect your driving

112
Q

To determine the blood alcohol concentration (BAC) for a person, it is necessary to know what?

A

how much the person weighs

113
Q

Which of these is not a good rule to follow when caring for the injured at an accident scene?

A

keep the injured person cool

114
Q

You should use your mirrors to check:

A

where the rear of the vehicle is while you make turns

115
Q

Which of these statements about backing a heavy vehicle is true?

A

you should avoid backing whenever you can

116
Q

If you must cross into the oncoming lane as you make a turn, you should:

A

watch for oncoming traffic

117
Q

When you are parked at the side of the road, you must:

A

turn on your 4-way flashers to warn others

118
Q

Which of these statements about speed management is true?

A

you should choose a speed that lets you stop in the distance you can see ahead

119
Q

When driving on roads where truck speed limits are lower than cars. You should

A

use extra caution when changing lanes or passing

120
Q

You are driving a 40 foot vehicle at 35 MPH. What is the least amount of space you should keep between your vehicle and the one in front of you?

A

4 seconds

121
Q

What 3 things add up to the total stopping distance for your truck or bus?

A

perception distance, reaction distance, braking distance

122
Q

When driving at night you should use your low beams when an oncoming vehicle is within:

A

500 ft

123
Q

What should you do before driving in mountains?

A

know the escape ramp locations on your route

124
Q

A car cuts in front of you creating a hazard. Which of these actions should you not take?

A

honk and stay close behind the car

125
Q

What should you do when you see a hazard in the roadway ahead of you?

A

use your 4-way flashers or brake lights to warn others

126
Q

You are driving on a level highway at 50 MPH. there are no other vehicles around you. A tire blows out on your vehicle. What should you do first?

A

stay off the brake until the vehicle has slowed down

127
Q

What does emergency braking mean?

A

responding to a hazard by slowing the vehicle

128
Q

Having ABS on only the tractor will

A

give you more control over the vehicle

129
Q

Which of these statements about cargo is true?

A

unstable loads such as hanging meat or livestock can require extra caution in curve

130
Q

A principle to remember about loading cargo is to keep the load:

A

balanced in the cargo area

131
Q

Which of these is not a brake check you normally do during the walk around inspection?

A

hydraulic cylinder leaks

132
Q

Which of these items is not checked in the pre-trip inspection?

A

amount of fuel in the vehicle

133
Q

Which of these statements about shipping hazardous materials is true?

A

a diamond-shaped hazardous label must be on the package

134
Q

placards must be:

A

placed on all 4 sides of the vehicle

135
Q

You must stop on a hill or a curve on a divided highway. How far back should you place the rear most triangle?

A

as far back as necessary to warn others

136
Q

You are driving a newer truck with a manual transmission. What gear will you need to take a long downhill grade?

A

a lower gear than you used to climb the hill

137
Q

Aggressive driving

A

driving a vehicle in a bold, selfish, pushy manner

138
Q

ABS uses sensors and computers to sense:

A

potential wheel lockup

139
Q

The distance you should look ahead of your vehicle while driving at low speeds is what distance?

A

1 block

140
Q

At dawn or dusk or in snow, it can be hard to see and be seen. You can let others know you are there by:

A

turning on your lights

141
Q

You are driving through a work zone. You should:

A

lower your speed even farther any time workers are present

142
Q

When driving down a mountain you will have to use lower gears to drive safely, Which of these does not affect your choice of gears?

A

tire tread depth

143
Q

Which of these is a danger of crossing tracks on a dirt road?

A

you could get hung halfway across the tracks

144
Q

Which of these is a good thing to do when steering to avoid a crash?

A

don’t turn more than needed to miss whatever is in your way

145
Q

If a straight truck goes into a front wheel skid, it will:

A

go straight ahead even if the wheels are turned

146
Q

Which of these lights cannot be checked at the same time?

A

turn signals, brake lights, and 4-way flashers

147
Q

When driving in cold weather, your tire tread depth should:

A

provide enough traction to steer and get through the snow

148
Q

If you react _ slower, your chances of a crash can double

A

1/2 second

149
Q

Which of these is true about hours of service?

A

you should balance you hours of service with enough sleep to keep you alert

CDL (3 decks)

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