General Knowledge Flashcards
1
Q
What is the most important reason for doing a vehicle inspection?
A
Safety is the most important reason to inspect your vehicle
2
Q
What things should you check during a trip?
A
Watch gauges for signs of trouble
3
Q
Name some key steering parts.
A
Spindle, tie rod, drag link
4
Q
Name a suspension system defect.
A
Leaking shock absorbers
5
Q
What 3 kinds of emergency equipment should you have?
A
Fire extinguisher, spare electrical fuses, warning device
6
Q
What is the minimum tread depth for front tires?
A
4/32 inch
7
Q
What is the minimum tread depth for other tires?
A
2/32 inch
8
Q
Name some things you should check on the front of your vehicle during the walk-around inspection?
A
Signal and clearance lights, headlights
9
Q
What should wheel bearing seals be checked for?
A
Leaking
10
Q
How many reflective triangles should you carry?
A
3
11
Q
Why should you back toward the driver’s side?
A
Because you can see better
12
Q
1)What is a pull-up?
A
Re-positioning of your vehicle when backing
13
Q
1)If stopped on a hill, how can you start moving without rolling back?
A
Partly engage clutch before taking your foot off the brake
14
Q
1)When backing, why is it important to use a helper?
A
To help avoid blind spots
15
Q
1)What’s the most important hand signal that you and the helper should agree on?
A
Stop
16
Q
1)What are the 2 special conditions where you should downshift?
A
Before starting down a hill and before entering a curve
17
Q
1)When should you downshift automatic transmissions?
A
Before starting downgrade
18
Q
1)Retarders keep you from skidding when the road is slippery. True or False?
A
False
19
Q
1)What are the 2 ways to know when to shift?
A
Engine speed, road speed
20
Q
1)How far ahead should you look when driving?
A
12 to 15 seconds
21
Q
1)What are the 2 main things to look for ahead?
A
Traffic and road conditions
22
Q
1)What’s your most important way to see the sides and rear?
A
Use your mirrors
23
Q
1)What does “communicating” mean in safe driving?
A
Signaling your intentions
24
Q
1)Where should your reflectors be placed when stopped on a divided highway?
A
10’/100’/100’
25
1)**What 3 things add up to total stopping** **distance?**
Perception distance/ reaction distance/ braking distance
26
1)**If you go twice as fast, your stopping distance will increase by twice or 4** **times?**
Four times
27
1)**Empty trucks have the best braking. True or** **False?**
False
28
1)**What is** **"hydroplaning"?**
Tires lose contact with road and have no traction
29
1)**What is "black** **ice"?**
Thin sheet of clear ice on roadway
30
1)**You should use low beams whenever you can. True or** **False?**
True
31
1)**What should you do before you drive if you are** **drowsy(**adj. 昏昏欲睡的**)?**
sleep
32
1)**What effects can wet brakes** **cause?**
Lack of braking power
33
1)**You should let air out of hot tires so the pressure goes back to normal. True or** **False?**
False
34
1)**You can safely remove the radiator cap as long as the engine isn't overheated. True or False?**
False
35
1)**What factors determine your selection of a "safe" speed when going down a long, steep downgrade?**
Weight of vehicle/ length of grade/ steepness/ road conditions/ weather
36
1)**Why should you be in proper gear before starting down a** **hill?**
You may not be able to shift back into any gear and all braking effect will be lost
37
1)**Describe the proper braking technique when going down a long, steep** **downgrade.**
Apply brakes to 5mph below safe speed. Release and repeat.
38
1. **What is a** **"hazard"?**
Any road condition or user that is a possible danger
39
Why make emergency plans when you see a hazard?
So you will have more time to act
40
Stopping is not always the safest thing to do in an emergency. True or False?
True
41
1)**What is an advantage of going right instead of left around an** **obstacle?**
You will avoid drivers passing on the left
42
1)**What is an "escape** **ramp"?**
An exit at the bottom of a hill to slow you down and stop
43
1)**If a tire blows out, you should put the brakes on hard to stop quickly. True or** **False?**
False
44
What is one thing to do at an accident scene to prevent another accident?
Put out flare(照明弹)s
45
1)**Name 2 causes of tire** **fires?**
Under inflated tires and duals that touch
46
What kind of fire is a B, C extinguisher good for?
Electrical, fuel
PS：A Class C fire extinguisher is used on fires that involve live electrical equipment.
Class B fires involve flammable and combustible liquids such as gasoline, alcohol, oil-based paints, lacquers.
47
When using your extinguisher, should you get as close as possible to the fire?
No
48
Name a cause of vehicle fires.
Flammable cargo
49
For what 3 things related to cargo are drivers responsible?
Inspection of cargo, balanced weight of cargo, secured cargo
50
1)**How often while on the road must you stop to inspect your** **cargo?**
Every 3 hours or 150 miles
51
1)**What is the "gross combination weight"** **(GVW)?**
Weight of power unit, plus trailer, plus cargo
52
1)**Name a situation where legal maximum weight may not be** **safe.**
Mountain traveling
53
What can happen if you don't have enough weight on the front axle?
Can cause poor traction
54
1)**What is the minimum number of tie downs for a 20 foot** **load?**
At least one tie down for every 10 feet
55
What is the minimum number of tie downs for any flatbed(a.平板的) load?
2
56
Name 1 basic reason for covering cargo on an open road.
Protect the cargo from weather
57
What must you check before transporting a sealed load?
Check that you don’t exceed weight restrictions
58
Stab braking should not be used on vehicles:
PS: **Stab braking** is the a system which is prevalent(a. 普遍的) even today in cars without anti-lock braking system. It is a kind of wheel locking mechanism, where you brake hard and the wheels get locked immediately. When you hear the screeching sound, you release the brake pedal and hit it hard again within a second.
Equipped with anti-lock brakes
PS: **An anti-lock brake system, ABS,** is a system which is designed to prevent you from “locking” up your brakes, or applying so much pressure to your brakes that the axle and your wheels themselves stop turning completely.
59
What should you always do when travelling down a long downgrade?
Use the braking effect of the engine
60
Bridge formulas are designed to:
PS: The bridge formula is: W = 500 ((LN/(N-1)) + 12N + 36).
W = the overall gross weight of any two or more consecutive axles to the nearest 500 lbs.
L = the distance (in feet) between the outer axles in a group of two or more axles.
N = the number of axles in the group.
Permit less maximum axle weight for axles that are closer together
61
Which statement is true?
Drivers with rental trucks are often not used to driving a large vehicle and may be more dangerous
62
1)**The first offense for driving a commercial vehicle under the influence of drugs or alcohol will cause you to lose your CDL** **for:**
1 year
63
Your vehicle will be placed "out of service" if this many leaves of springs are broken or missing?
One fourth of total number
64
Can your truck or bus be inspected by federal inspectors?
Yes, and can also place you out of service
65
Can I use over-the-counter medication when operating a CMV?
Should not be used because it can make you sleepy
66
Which of these statements is True?
Many accidents occur between 12 am and 6 am
67
Which statement is True about rear drive-wheel braking skids?
When pulling a trailer, the trailer can push the towing vehicle sideways.
68
Which of these can you NOT check at the same time?
Brake lights, 4 way flashers and turn signal
69
1)**Which of the following will occur after you start your** **engine?**
The water temperature gauge will rise to normal operating temp.
70
1)**If your vehicle is 40 feet long and you are travelling 50 mph, what is the safe following distance?**
5 seconds
71
You can be placed out of service if your Blood Alcohol Concentration is:
Any amount detectable
72
What should you do when you see a hazard in the road in front of you?
Turn on your 4 way flashers to warn other drivers
73
1)**Why should you conduct a pre-trip** **inspection?**
To make sure the vehicle is safe to operate
74
1)**What happens when a tire blows out at highway** **speed?**
You will feel a vibration
75
1)**Which of these statements is True about tire** **pressure?**
76
1)**You should use your** **horn:**
To help you avoid a collision
77
**Convex(凸面的) mirrors** **will:**
Show a wider view than flat mirrors
78
1)**What type of fire will water** **extinguish?**
Tire
79
If you are traveling down a long grade and your brakes start to get weak, you should:
Stop as quickly as possible
80
1)**Why is it important to shift gears** **properly?**
To help maintain control of the vehicle
81
1)**When starting off on dry, level pavement(路面), it is normally not necessary** **to:**
1. Press on the gas pedal and pop out the clutch
2. Apply the parking brake
3. Both A and B
82
1)**With low-beam headlights on, you can** **see**
250 feet ahead
83
Which of these conditions can produce a skid?
1. Over steering
2. Over braking
3. Driving too fast
4. All of the above
84
What should you do if you are being tailgated（vi 紧跟行驶）?
Increase following distance
85
When should you use controlled braking?
To keep the vehicle in a straight line when braking
86
Which of the following is true when driving in cold weather?
Use anti-freeze in your windshield washer fluid
87
1)**When drinking alcohol, which is affected** **first?**
Judgment and self control
88
When backing to a dock, which of the following is NOT True?
Back slowly until you bump the dock
89
1)**What is controlled** **braking?**
Applying brake firmly, but not enough to lock up
90
What should you do when travelling through a construction zone?
Watch for holes in the road and drop offs
91
1)**When your brakes are wet, it is very easy** **to:**
Jackknife( vt.(铰接车失控时)弯折成V形) the trailer
92
If you are stopped on the shoulder of the road on a divided highway, you must:
Place reflective triangles or flares within 10 minutes of stopping
93
1)**The maximum speed limit for a school bus on a highway** **is:**
55 mph
94
When conducting a pre-trip inspection of the steering system, you would not inspect:
Leaking shock absorbers
95
1)**Before entering a curve, you** **should:**
Slow down to a safe speed and downshift before entering the curve
96
You must come to a full stop at railroad crossings:
When carrying passengers or hazardous cargo
97
1)**You may not drive for** **more** **than**\_\_\_\_**hours following your last period of 8 consecutive hours off** **duty.**
10
98
1)**About**\_\_\_\_**of all fatal crashes involving drinking** **drivers.**
One-half
99
When you double your speed, it takes _\_\_\_\__ times as much distance to stop your vehicle.
4
100
1)**"Offtracking"** **is:**
Trailer wheels following a different path than the tractor wheels
101
How far ahead should a driver be looking while driving a vehicle?
1/4 mile.
102
You are driving a heavy vehicle and must exit the highway using an off ramp that curves downhill. You should:
slow down to a safe speed before the ramp.
103
1)**Which of these statements are true about** **downshifting?**
When you downshift for a curve, you should do so before you enter the curve.
104
Which fires can you put out with water?
tire fires.
105
**Which of these statements about backing a heavy vehicle is** **true.**
You should avoid backing whenever you can.
106
**The key point in balancing cargo weight is to keep the load.**
centered
107
**In normal driving, some drivers use the hand valve before the brake pedal to prevent** **a jackknife. Which of these statements are** **true?**
This should not be done.
108
**There are two things a driver can do to prevent a rollover, the first, keep the cargo** **as close to the floor as possible and what is the** **other?**
go slow around turns.
109
Brakes can get wet when you drive through heavy rain. Wet brakes can cause?
A. wheel lockup.
B. trailer jackknife.
C. pulling to one side.
D. all the above.
110
**You are checking your steering and exhaust systems during a pre-trip inspection. Which of these statements is** **true?**
Steering wheel play of more than 10 degrees ( 2 inches on a 20-inch steering wheel) can make it hard to steer.
111
Your vehicle is in a traffic emergency and may collide (vt.碰撞) with another vehicle if you do not take action.
You can almost always turn to miss an obstacle more quickly than you can stop.
112
**Which of these is a good rule to follow when driving at** **night?**
Keep your speed slow enough to stop within the range of your headlights.
113
**Which of these statements are true about** **brakes?**
The heavier a vehicle or the faster it is moving, the more heat the brakes have to absorb to stop it.
114
Which of these is the most important thing to remember about emergency brakes?
If the wheels are skidding, you cannot control the vehicle.
115
116
**How do you test hydraulic brakes for** **leaks?**
With vehicle stopped, pump the pedal three times, apply firm pressure, hold for five seconds and see if the pedal moves.
117
You do not have a hazardous materials endorsement（n. 背书） on your commercial driver license. When can you legally haul hazardous materials?
When the load does not require placard(n. 标语牌)s.
118
You are checking your wheels and rims during a pre-trip inspection. Which of these statements is true?
Rust around wheel nuts may mean they are loose.
119
**To avoid a crash, you had to drive on the right shoulder. How should you move** **back onto the** **pavement?**
Come to a complete stop, if possible, before steering back onto the pavement.
120
**If you are being tailgated, you** **should?**
Increase the space in front of your vehicle.
121
**Which of these statements about staying alert to drive is** **true?**
The only thing that can cure fatigue(n.疲劳) is sleep.
122
**Which of these statements about speed management is** **true?**
Choose a driving speed that lets you stop in the space that you can see ahead.
123
**How far should a driver look ahead of the vehicle while** **driving?**
12-15 seconds.
124
**You are driving a 40 foot vehicle at 45 mph. Driving conditions are ideal (dry pavement, good visibility). The least amount of space that you should keep in front of** **your vehicle to be safe is the distance you would travel** **in:**
5 s
125
Which of these statements about drinking alcohol is true?
A few beers have the same effect on driving as a few shots of whiskey.
126
**As the Blood Alcohol Concentration (BAC) goes up, what** **happens?**
The person is even more dangerous if allowed to drive.
127
**Driving under the influence of a drug which makes you drive unsafely** **is?**
Against the law.
128
You wish to turn right from a two-lane street to another two-lane street. Your vehicle is so long that you must swing wide to make the turn. Which of these drawings show how the turn should be made?
B
129
**Some traffic emergencies may require you to leave the road. Which of these is a good thing to** **remember?**
You should avoid braking until your speed has dropped to about 20 mph.
130
Cargo that can shift should have at least _\_\_\_\__ tie-downs?
2
131
**Which of these statements about cargo loading is** **true?**
State regulations dictate(vt. 决定) legal weight limits.
132
If a straight vehicle goes into a front wheel skid, it will?
Go straight ahead even if the steering wheel is turned.
133
The most common cause of serious vehicle skids is?
Driving too fast for road conditions.
134
**Which of these statements about downshifting is** **true?**
When you downshift for a curve, you should do so before you enter the curve.
135
You should avoid driving through a deep puddle(n. 水坑)s or flowing water. But if you must, what will keep your brakes working?
Gently pressing the brake pedal while driving through the water.
136
**Which of these statements about backing a heavy vehicle is** **true?**
You should avoid backing whenever you can.
137
**High beams** **should?**
Be used whenever it is safe and legal to do so.
138
**Stab Braking** **-**
Involves locking the wheels.
139
**For an average driver driving 55 MPH on dry pavement, it will** **take about** **to** **bring the vehicle to a** **stop.**
The length of a football field.
140
**The parking brake should be tested while the vehicle** **is?**
Moving slowly.
141
**Controlled braking -**
Apply the brakes as hard as you can without locking the brakes.
142
**The vehicle in front of you has a red triangle with an orange centre on the rear.** **What does this** **mean?**
It is a slow moving vehicle.
143
You must park on the side of a level, straight, two-lane road. Where should you place the three reflective triangles?
One within 10 feet of the rear of the vehicle, one about 100 feet to the rear of the vehicle, and one about 100 feet from the front of the vehicle
144
The key principle in balancing cargo weight is to keep the load?
Centered.
145
**When should you check your** **load?**
Before you leave, after the first 25 miles and every 150 miles or 3 hours.
146
**If a vehicle is loaded with very little weight on the front axle, what can** **happen?**
Poor traction.
147
**Cargo** **inspections**
Should be done at every break during trip.
148
How do you correct a rear-wheel acceleration skid?
Stop accelerating and push in the clutch.
149
Which of these statements about double-clutching and shifting is true?
You can use the sound of the engine to tell you when to shift.
150
Which of these statements about tires and hot weather driving are true?
You should inspect your tires more often.
151
What should you do if your vehicle hydroplanes?
Release the accelerator.
152
You must make a very quick stop. You should brake so you:
Stay in a straight line and can steer.
153
**While driving, you see a small (1 foot square) cardboard box ahead in your lane.** **You should:**
154
**Which of these statements about overhead clearance is** **true?**
A vehicle's clearance can change with the load carried.
155
**When you are on top of a hill and know you will be going down a steep grade,** **which statement is** **true?**
Always downshift to a gear lower than you came up the hill before starting down the grade.
156
You are driving a vehicle with a light load, traffic is moving at 35 MPH in a 55 MPH zone. The safest speed for your vehicle in this situation is most likely:
35 MPH.
157
**What sort of things should you inspect during a** **trip?**
gauges, brakes, lights, cargo, and coupling devices.
158
159
**When should you downshift your** **vehicle?**
1. Before going down hill.
2. Before entering a curve.
3. Going up a hill.
4. All the above.
160
Which item is a key suspension part?
1. Tie rod.
2. Drag link.
3. Pitman arm.
4. None of the above.
161
What factors determine a persons blood alcohol content?
1. How much alcohol you drink.
2. How fast you drink.
3. How much you weigh.
4. All the above.
162
Perception(n.知觉，感觉) distance is?
The distance travelled from the time your eyes see a hazard until the time your brain recognizes the hazard.
163
When driving how far ahead should you be looking?
12 – 15 seconds.
164
Doubling your speed has what effect on braking distance?
Twice the speed = four times the stopping distance.
165
166
Hazardous material placards are:
1. Placed on the front, rear, and both sides of the vehicle.
2. 10 and ¾ inches square.
3. Turned up right on a point, in a diamond shape.
4. All of the above.
167
**Which of these requires the greater stopping** **distance?**
An empty vehicle.
168
**You are convict(vt.证明......有罪)ed of speeding in your personal vehicle and issued a ticket. What** **are your responsibilities to your** **employer?**
CDL holders must report convictions for traffic violations ( except parking violations ) to employers within 30 business days.
169
Which of the following emergency items are you not required to have available?
First aid kit.
170
**Underinflated tires can cause a** **fire.**
True
171
When backing and turning, you should:
1. Back and turn towards the driver’s side.
2. Use a helper if possible.
3. Check your path before you begin backing.
4. All of the above.
172
**Which of the following is a basic step to take after an** **accident?**
1. Protect the area.
2. Notify the authorities.
3. Care for the injured.
4. All of the above.
173
Which of the following is not a CDL skills examination?
Materials handling test.
174
What is the minimum number of tie-downs required for a small load?
2
175
**How many warning triangles are you required to carry in your** **vehicle?**
3
176
The acronym " GVW " means?
Gross vehicle weight.
177
**When inspecting brakes components you should pay special attention** **to:**
1. Cracked brake drums.
2. Brake shoes with oil, grease or fluid on the shoes.
3. Broken, missing, damaged or heavily worn shoes.
4. All of the above.
178
Battery fluid is classified as a:
Corrosives.
179
**When using a helper to back up, What is the most important hand** **signal?**
Stop.
180
What is the minimum tread depth for a front tire?
4/32 of an inch.
181
**Your vehicle brakes down on an undivided highway. There are no hills or curves** **within a mile in either direction. Where should you place the warning** **triangles?**
100 feet in front, 10 feet behind and 100 feet behind the vehicle.
182
**A fire extinguisher with a C rating is designed for what type of** **fires?**
Electrical fires and burning liquids only.
183
**When transporting cargo, how often should you check your** **load?**
Within the first 25 miles of the trip and every 150 miles or every 3 hours afterwards, which ever comes first.
184
You should always aim the fire extinguisher at the top of the flames so that the chemicals will fall onto the fire.
False.
185
186
How many classes of hazardous materials are there?
9
187
**When should a driver consider turning off a retarder(n. 减速器) system on the** **vehicle?**
During wet and icy road conditions.
188
**When caring for an injured person, you** **should:**
1. Only move them if they are in danger from fire or traffic.
2. Apply direct pressure to any wounds.
3. Keep the injured person warm.
4. All of the above.
189
**Should your vehicle catch fire, it is best to pull into a service station because they have plenty of fire fighting** **equipment?**
False.
190
**When loading the cargo compartment of a vehicle it is best to place heavy items on** **the bottom and the light items on** **top.**
True.
191
What are the three rules for using your turn signals?
1. Signal early 2. Signal continuously 3. Make sure the signal turns off after the turn is completed.
192
**Which item is a key steering system** **part?**
Pitman arm.
193
**Blocking is used to keep the cargo from** **shifting.**
True.
194
**When fighting an engine compartment fire, it is best to lift the hood in order to** **target the fire's** **base.**
False.
195
Reaction time or distance is?
The distance travelled from the time your brain tells your foot to move from the accelerator to actually push on the brake pedal.
