General Knowledge Multiple Choice

CDL General Knowledge Test
Hello everyone!
Here you can see a variety of different questions of General Knowledge CDL exam. To read about General Knowledge and other useful information about CDL go here.

All About Truck CDL are manage with professional staff. We specialize in dispatching trucks work and belong to dispatching trucks department.

I have already passed this exam in New York and I wanted to share with you the questions with already the right answers that General Knowledge consist. But don't think that this list of questions you can use only if you are passing CDL exam in NY. NO, no, no don't worry, exactly this questions compose General Knowledge in all states of America.
I think this would be very helpful for you to get your own license. So I wish you good luck.




1. To prevent a load from shifting, there should be at least one tie down for every _____ feet of cargo.      
a. 10
2. You are driving a 40-foot vehicle at 35 mph. The road is dry, and visibility is good. What is the least amount of space you should keep in front of your vehicle to be safe?
b. 4 seconds.
3. Which of these statements about drinking alcohol is true?
a. A few beers have the same effect on driving as a few shots of whiskey or a few glasses of wine.
4. While driving, ice builds up on your wipers and they no longer clean the windshield. You should:
c. Stop safely and fix the problem.
5. Which of these statements about driving in areas with strong winds is true?
a. Winds are a big problem when a truck comes out of tunnels.
6. What is counter-steering?
c. Turning the wheel back in the other direction after steering to avoid a traffic emergency.
7. To help you stay alert while driving, you should:
c. Take short breaks before you get drowsy.
8. You do not have a Hazardous Materials Endorsement on your Commercial Driver’s License. You can drive a vehicle hauling hazardous materials when:
b. The vehicle does not require placards.
9. Cargo inspections:
b. Should be performed as part of your pre-trip inspection, again within the first 50 miles of your trip, then again after you have driven 3 hours or 150 miles, and after every break you take during driving.
10. Retarders:
c. Can cause the drive wheels to skid when they have poor traction.
11. You are driving a new truck with a manual transmission. What gear will you probably have to use to take a long, steep downhill grade?
b. A lower gear than you would use to climb the hill.
12. Which of these statements about speed management is true?
c. You should choose a speed that lets you stop within the distance that you can see ahead.
13. Which of these best describes how you should use the brake pedal on a steep downhill grade?
a. Snubbing.
14. Which of these statements about double clutching and shifting is true?
c. You can use the tachometer to tell you when to shift.
15. Which if these statements about using turn signals is true?
b. When turning, you should signal early.
16. Which of these statements about cargo loading is true?
b. State laws dictate legal weight limits.
17. If your vehicle catches fire while you are driving, you should:
a. Park in an open area.
18. You are checking your tires for a pre-trip inspection. Which of these statements is true?
a. Tires of mismatched sizes should not be used on the same vehicle.
19. 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.
20. An en route inspection should include checking for:
c. Both of these are correct.
21. You are driving in the right lane of a four-lane, undivided road. You come over a hill and find a car stopped ahead in your lane. You do not have room to stop. The hill blocks your view to the rear. The shoulder is clear. Which of these is most likely the best action to take?
b. Steer to the right.
22. Where or when should you test the stopping action of your service brakes?
b. When the vehicle is moving at about 5 mph.
23. Which of these is not part of the pre-trip inspection of the engine compartment?
a. Valve clearance.
24. Cargo covers:
c. Both of the Answers.
25. High beams should be:
a. Used when it is safe and legal to do so.
26. Which of these is the most important thing to remember about emergency braking?
b. If the wheels are skidding, you cannot control the vehicle.
27. You must park on the side of a level, straight, two-lane road. Where should you place the reflective triangles?
b. One within 10 feet of the rear of the vehicle, one about 100 feet to the rear, and one about 100 feet to the front of the vehicle.
28. The road you are driving on becomes very slippery due toglare 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.
29. Which of these statements about tires and hot-weather driving is true?
c. You should inspect your tires every two hours or every 100 miles when driving in very hot weather.
30. Your truck is in a traffic emergency and may collide with another vehicle if you do not take action. Which of these is a good rule to remember at such a time?
a. You can almost always turn to miss an obstacle more quickly than you can stop.
31. What should you do when your vehicle hydroplanes?
c. Release the accelerator.
32. You are starting your vehicle from a stop. As you apply power to the driver wheels, they start to spin. You should:
a. Take your foot off the accelerator.
33. Stab Braking:
b. Involves releasing the brakes only after the wheels lock up.
34. It takes the body about ______ hours to get rid of the alcohol in four drinks.
b. 4
35. Cargo that can shift should have at least _____ tie-downs(s).
b. 2
36. If a straight vehicle (no trailer or articulation) goes into a front-wheel skid, it will: a. Slide sideways and spin out.
b. Go straight ahead even if the steering wheel is turned.
37. Which of these statements about accelerating is true?
a. Rough acceleration can cause mechanical damage.
38. Which of these is a good thing to remember when crossing or entering traffic with a heavy vehicle?
a. Heavy vehicles need larger gaps in traffic than cars.
39. Which of these statements about staying alert to drive is true?
c. Sleep is the only thing that can overcome fatigue.
40. You are driving on a two-lane road. An oncoming driver drifts into your lane and is headed straight for you. Which of these is most often the best action to take?
b. Steer to the right.

41. Which of these statements about engine overheating is true?
c. You should never remove the radiator cap on a pressurized system until the system has cooled.
42. You are driving a truck with a manual transmission. You have to stop the truck 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?
b. Use the parking brake to hold the vehicle until the clutch engages.
43. A vehicle is loaded with most of the weight on the steering axle. What may result?
a. Hard steering and possible damage to the tires.
44. You are driving a 40-foot vehicle at 50 mph. Driving conditions are ideal (dry pavement, good visibility). What is the least amount of space that you should keep in front of your vehicle to be safe?
c. 5 seconds.
45. Which of these things is a good thing to do when steering to avoid a crash?
c. Do not turn any more than needed to clear what is in your way.
46. You are checking your wheels and rims for a pre-trip inspection. Which of these statements is true?
a. Rust around lug nuts may mean that they are loose.
47. You do not have a Hazardous Materials Endorsement on your Commercial Driver’s License. You are asked to deliver hazardous material in a placarded vehicle. You should:
a. Refuse to haul the load.
48. As the Blood Alcohol Concentration (BAC) goes up, what happens?
b. Judgment and self-control are affected.
49. If you need to leave the road in a traffic emergency, you should:
b. Avoid braking until your speed has dropped to about 20 mph.
50. Which of these statements about downshifting for a long downhill grade is true?
b. It allows engine compression and friction to help slow the vehicle.
51. When looking ahead of your vehicle while driving you should look:
c. Back and forth near and far.
52. Escape ramps are:
a. Used to stop runaway vehicles.
53. Which of these statements about cold-weather driving is true?
b. Windshield washer antifreeze should be used.
54. When should you wear seat belts?
a. Anytime you are in a moving vehicle.
55. Controlled braking:
c. Is used to keep a vehicle in a straight line when braking.
56. How do you correct a rear-wheel acceleration skid?
c. Stop accelerating.
57. Which of these is NOT a good rule to follow when caring for injured at an accident scene?
b. Keep injured persons cool.
58. For your safety, when setting out reflective triangles you should:
b. Hold the triangles between yourself and oncoming traffic.
59. Heavy vehicles must sometimes travel more slowly than other traffic. Which of these is NOT a good rule to follow when you are driving such a vehicle?
a. Signal other drivers when it is safe for them to pass you.
60. The most important reason for being alert to hazards is so:
c. You will have time to plan your escape if the hazard becomes an emergency.
61. Hydroplaning:
c. Is more likely if tire pressure is low.
62. If you are being tailgated, you should:
a. Increase your following distance.
63. Which of these statements about overhead clearance is true?
b. The weight of a vehicle changes its height.
64. Which of these is a good rule to follow when using a fire extinguisher?
c. Aim at the base of the fire.
65. While Driving, you see a small (1-foot square) cardboard box ahead in your lane. You should:
a. Steer around it without making a sudden or unsafe move.
66. Is it legal to drive with one fourth of a vehicles leaf springs broken or missing?
c. No.
67. Which of these can cause a fire?
d. All the answers are correct.
68. Dry bulk tanks and hanging meat:
c. Are unstable loads.
69. Which of the following should you NOT do in the event of hydraulic brake failure?
a. Shift up.
70. To correct a drive-wheel braking skid you should:
c. Counter-steer.
71. Which of the following statements about tank vehicles is true?
a. All tank vehicles have some sort of bulkhead or baffle.
b. The term "tank vehicle" refers only to those vehicles having a permanently attached tank.
c. Special skills are required to haul liquid tanks.
72. If you are driving a long distance, you should:
a. Stop often and take short breaks before you feel really drowsy or tired.
73. Which of the following is true about a vehicle with a high center of gravity?
b. The cargo should be rearranged so that the heaviest parts of the cargo are under the lightest parts.
74. To prevent skidding, you should:
c. Adjust to conditions while driving.
75. You should back and turn toward the driver's side:
b. So you can watch the rear of the vehicle by looking out the side window.
76. When you check the condition of visible parts during your pre-trip inspection, make sure that the __________ are secured against snagging, rubbing or wearing.
c. Airlines and electrical wiring.
77. With a BAC of ___, most people lose consciousness, and some die.
a. .40
78. The distance your vehicle travels from the time your eyes see a hazard until your brain recognizes it is called ______ distance.
a. Perception.
79. Which of these items is checked in a pre-trip inspection?
d. All of these answers are correct.
80. The "reaction distance" is the distance traveled from the time:
a. The brain tells the foot to push the brake pedal to the time the foot actually pushes the pedal.
81. When driving a commercial vehicle with a height over 13 feet, you should:
a. If you aren’t sure a clearance is high enough, stop and make sure.
82. The purpose of a baffle is to:
a. Control the load surge.
83. The new BAC (Blood Alcohol Concentration) for commercial drivers to be considered intoxicated when driving a commercial vehicle is:
c. .04
84. Truck escape ramps:
b. Are designed to protect vehicles from damage.
85. Which of these can cause the vehicle to skid?
d. All of these can cause a vehicle to skid.
86. Which of these describes how you should use the brake pedal on a steep downhill grade?
a. Release the brake when you are 5 MPH below your safe speed, then let your speed come back up to your safe speed and repeat braking again, (bring you speed down 5 MPH below your safe speed.
87. An en-route inspection should include checking:
d. All of these should be checked.
88. According to the driver's manual, why should you limit the use of your horn?
b. It can startle other drivers.
89. The amount of liquid to load into a tank depends on:
d. All of these are correct.
90. You should use your mirrors to check:
d. All of these are correct.
91. Your brakes can get wet when you drive through a heavy rain. What can this cause when the brakes are applied?
d. All of these are correct.
92. Which of these statements about using mirrors is true?
a. There are blind spots that your mirrors cannot show you.
93. To avoid a crash, you had to drive onto the right shoulder. You are now driving at 40 MPH on the shoulder. How should you move back onto the pavement?
b. Come to a complete stop, if possible, before steering back onto the pavement.
94. Which of these statements about managing space is true?
b. When the road is slippery, you should keep much more space in front of your vehicle.
95. You are testing the stopping action of service brakes on a hydraulic system. Which of these can mean there is a problem?
d. All of these are correct.
96. The distance that you should look ahead of your vehicle while driving amounts to about ____ at highway speed.
a. 1/4 mile.
97. Which of these statements about drinking alcohol is true.
d. All of these are true.
98. On which fires can you use the "ABC" fire extinguisher?
d. All of these are correct.
99. Which of these is a proper use of vehicle lights and flashers?
d. All of these are correct.
100. Which of these tell you that cargo contains hazardous materials?
c. Both of these answers are correct.
101. If you are convicted for driving under the influence while driving a commercial vehicle, and this is your first offense, you will most likely get:
c. At least a one-year suspension of your CDL.
102. Some liquid tanks are divided into several smaller tanks by:
b. Bulkheads..
103. Front-end header boards:
c. Both answers are correct.
104. The height of the vehicle center of gravity is very important for safe handling. A high center of gravity means you are more likely to do the following:
a. Rollover.
105. The "load" means the following?
b. The maximum safe weight a tire can carry at a specified pressure.
106. Whether or not you load and secure your load yourself, you are responsible for:
d. All of these answers are correct.
107. Which of these statements about downshifting for a long downhill grade is true?
b. It allows engine compression and friction to help the brakes slow the vehicle.
108. Medical certificates must be renewed every:
a. 2 years.
109. During a pre-trip inspection you discover an exhaust leak or power steering leak, you should:
a. Report the problem and make arrangements for another vehicle to use.
110. During what time in your pre-trip inspection of a school bus do you check the back emergency door? (to ensure it is closed.)
a. During step four (lights first half) the inside walk through.
111. Inspect your cargo after you have driven:
a. 25 miles or 50 miles depending on the law in the state you are in, then again after 3 hours or after you have driven 150 miles and after every stop for a break.
112. Axle weight means the following?
a. The weight transmitted to the ground by one axle or one set of axles.
113. Blocking your cargo to keep it from sliding must be done at the:
c. Used in front, back, and/or sides of a piece of cargo.
114. Over-length, over-width, and/or overweight loads require:
d. All of these answers are correct.
115. Turn signals should be used:
a. At least 100 feet before turning or changing lanes.
116. Which of these statements about speed management is true?
d. All of these are true.
117. You are driving on a straight, level highway at 50 mph. There are no vehicles in front of you. Suddenly a tire blows out on your vehicle. What should you do first?
c. Stay off the brake until the vehicle slows down on its own.
118. Which of these will help keep an engine cool in hot weather?
d. All of these answers are correct.
119. When a vehicle is carrying a load at night, which extends four feet or more beyond the rear of the body, there must be ____ at the extreme end of the load.
c. 2 red lights.
120. When checking the bus seats, what are you looking for?
d. All these answers are correct.
121. You must inspect your cargo:
d. All of these are correct.
122. Tie downs must be of the proper type and strength. The combined strength of cargo tie downs must be strong enough to lift:
a. One and one-half times the weight of the cargo tied-down.
123. Which of these is important to check before driving in the winter?
a. Exhaust.
124. Tank vehicles are used to carry any liquid and are dangerous to drive because:
d. All of these are true.
125. Gross Vehicle Weight Rating (GVWR) means the following?
a. Maximum GVW specified by manufacture for a single vehicle including it's load.
126. Gross Vehicle Weight (GVW) means the following:
a. The total weight of a single vehicle including its load.
127. Prior to driving, what are some of the items you should check the interior of the bus for?
d. All of these are correct.
128. How far can the board of education make a student walk to their assigned pick up location?
a. 1/2 mile.
129. There are three types of vehicle inspections, which of these is one of them?
d. All of these are correct.
130. You are checking your brakes and suspension system for a pre-trip inspection. Which of these statements is true?
d. All of these are true.
131. You must park on the side of a level, straight, four lane, divided highway. Where should you place the three reflective triangles?
c. One within 10 feet of the rear of the vehicle, one about 100 feet to the rear, and one about 200 feet to the rear.
132. Which of these is a good driving rule for work zones?
d. All of these are correct.

133. Under loaded front axles can cause the following:
d. All of these are correct.
134. Dry bulk tanks require special care because:
c. Both of these are true.
135. Overloading can have a bad effect on?
c. Braking.
136. No matter how small the cargo is, it should have at least:
b. 2 tie downs.
137. As part of your pre-trip inspection you must:
d. All of these are correct.
138. Which item below lists almost all or all the emergency equipment that is required on a school bus?
a. A fire extinguisher, flashlight, fusees, electrical fuses (if your vehicle uses them), a crow bar, emergency triangles, and a first aid kit (with an emergency medical card for each student inside the first aid kit).
139. Cargo that is not loaded or secured properly can cause many problems. Which of these statements is true?
d. All of these are true.
140. You must drive on a slippery road. Which of these is a good thing to do in such a situation?
b. Slow down gradually.
141. Brake "fade":
c. Can be caused by the brakes becoming too hot.
142. The biggest problem with a broken exhaust system is that it may let poison fumes into the vehicle's cab.
a. True.
143. What is the most important reason for doing a vehicle inspection?
d. All of these are correct.
144. You should have a minimum of ____ tread on your steering tires.
b. 4/32 inch.
145. When taking a break in the middle of your trip you should check:
c. Critical items such as: tires, brakes, and cargo tie-downs.
146. Which of these is correct regarding brake shoes:
b. Brake shoes should not be worn dangerously thin.
147. What items should be checked for safety on the steering column?
b. Steering arms should not have missing nut, bolts or cotter keys.
148. Measuring BAC (Blood Alcohol Concentration) is done by measuring a person's:
c. Body Weight.
149. Your truck has a dual air system and one of the system loses its pressure. What will happen?
c. Either the front or back brake will not be fully operational.
150. When getting in to start the engine and inspect inside the cab you must:
c. Both of these answers are correct.
151. When preparing to do a pre-trip inspection you must check to see that the parking brakes are on and/or chocked.
a. True.
152. The oil pressure gauge should come up to normal within how long after staring the engine?
b. Seconds.
153. You should check the following for looseness, sticking, damage, or improper settings:
c. Both of these answers are correct.
154. After inspecting mirrors and windshields for cracks, dirt, and illegal stickers, or other obstructions to your vision, you should:
b. Clean and adjust as necessary.
155. When checking lights you should:
d. All of these are correct.
156. What should the wheel bearing seals be checked for?
c. Hub oil level and no leaks.
157. How many red reflective triangles should you carry?
b. 3
158. How do you test the hydraulic brakes for leaks?
a. Pump the brake pedal three times, then apply firm pressure to the pedal and hold for five seconds. The pedal should not move.
159. Why put the starter key in your pocket during the pre-trip inspection?
c. For your safety.
160. To avoid rollbacks when you start, you should:
c. Partly engage the clutch before you take your right foot off the brake.
161. What is the proper way to hold the steering wheel?
a. Firmly with both hands on opposite sides of the wheel.
162. Why should you back towards the driver's side?
c. Both answers are correct.
163. When backing, why is it important to use a helper?
b. There are blind spots you can't see.
164. What is the most important hand signal you and your backing helper should agree on?
a. Stop.
165. What are two special occasions where you should downshift?
b. Before starting down a hill and before entering a curve.
166. When should you downshift automatic transmissions?
a. When going down grades.
167. Retarders keep you from skidding where the road is slippery.
b. False.
168. What are two ways to know when to shift?
c. Use engine speed (rpm) and use road speed (mph).
169. How far ahead should you look?
b. 12-15 seconds.
170. What are the two main things to look for ahead?
c. Traffic and road conditions.
171. What is your most valuable way to see the sides and rear?
b. Checking your mirrors regularly.
172. What does "communicating" in mean in safe driving?
a. Letting other drivers know you're there to help prevent crashes.
173. If you go twice as fast your stopping distance will increase by:
c. Four times.
174. Empty trucks have the best braking.
b. False.
175. What is hydroplaning?
b. When the tires lose their contact with the road.
176. What is black ice?
c. A thin layer of ice clear enough that you can see the road underneath it.
177. If the vehicle in front of you is smaller than yours, it can probably:
b. Stop faster than you.
178. If you are driving a 30 foot vehicle at 55 mph, how many seconds of following distance should you allow?
a. 4 seconds.
179. If you swing wide to the left before turning right another driver may try to pass you on your right.
a. True.
180. You should use low beams whenever you can.
b. False.
181. What should you do before driving if you are sleepy?
c. Get some sleep before you drive.
182. What effects can wet brakes cause?
a. Brakes can be weak or grab.
183. How can you avoid wet brake problems?
b. Slow down, shift to a low gear, gently put on the brakes.
184. You should let air out of hot tires so the pressure goes back to normal.
b. False.
185. You can safely remove the radiator cap as long as the engine isn't overheated.
b. False.
186. What factors determine your selection of "safe" speed when going down a long steep downgrade?
c. Total weight of the vehicle, length of the grade, steepness, road conditions, and weather.
187. Why should you be in the proper gear before starting down a hill?
a. Because gravity can cause the speed of your vehicle to increase.
188. What is a hazard?
a. Any road condition or other road user that is a possible danger.
189. Why make emergency plans when you see a hazard?
b. In order to protect yourself and others.
190. What are some advantages of going right instead of left around an obstacle?
d. All of these answers are correct.
191. Stopping isn't always the safest thing to do in an emergency.
a. True.
192. What is an "escape ramp"?
a. Ramps that are located a few miles from the top of a downgrade to help you stop.
193. What are some things to do at an accident scene to prevent another accident?
d. All of these answers are correct.
194. Name two causes of fires:
a. Under-inflated tires and duals that touch.
195. Which of these can cause the vehicle to skid?
d. All of these answers are correct.
196. You are driving a vehicle that could safely be driven at 55 mph on an open road; but traffic is now heavy, moving at 35 mph, although the speed limit is 55. The safest speed for your vehicle in this situation is most likely:
a. 35 mph.
197. Every time you park your vehicle and shut the engine off you should:
b. Apply the parking brake.
198. For an average commercial vehicle being driven at 55 mph on dry pavement it will take about ___ to bring the vehicle to a stop.
a. The length of a football field (300 feet).
199. Which of these statements about certain types of cargo is true?
c. Unstable loads such as hanging meat or livestock require extra caution on curves.
200. Which of the following statements about backing is true?
d. All of the these are true.
201. The most common cause of serious vehicle skids is:
a. Driving too fast for road conditions.
202. The parking brake should be tested while the vehicle is:
c. Moving forward slowly.
203. A driver's trip log if required:
c. Must be shown immediately when an officer requests it.
204. When should the pre-trip inspection report from the last driver be reviewed?
a. During your pre-trip inspection.
205. If you are stopped at a rest area and found to have a BAC (Blood Alcohol Concentration) of .02 you will:
a. Be placed out of service for 24 hours.
206. How far ahead should you be looking while driving in town?
a. 1 block.
207. How does "bleeding tar" effect the road surface and driving conditions?
b. Tar in the road pavement rises to the road surface in very hot weather causing the roads to become very slippery.
208. Converter dollies built on or after March 1, 1998 are required to have anti-lock brakes. These dollies will have:
b. A yellow malfunction lamp on the left side of the dolly.
209. What is the minimum length for mud flaps?
b. Within 8 inches of the surface of the road.
210. How long does it take a typical tractor trailer to clear a single track? A double track?
c. It takes 14 seconds to clear a single track, and more than 15 seconds to clear a double track.
211. What is the definition of "sleep debt"?
a. The cumulative effect of not getting enough sleep.
212. Name some important steering system parts:
a. Tie rod, spindle, and pitman arm.
213. What is the minimum tread depth for front tires?
c. 4/32 inch.
214. When using your fire extinguisher you should get as close to the fire as possible.
b. False.
215. Name some things you should check on the FRONT of your vehicle during your pre-trip inspection:
a. Low beams, high beams, four way flashers, and turn signals.
216. Why are placards used?
c. To communicate the risk.
217. Name some suspension system defects:
c. All of the answers are correct.
218. What is the minimum tread depth for tires other than front tires?
a. 2/32 inch.
219. How can you avoid the effects that wet brakes can cause?
d. All of these answers are correct.
220. What things should you check during a trip?
c. Watch gauges, mirrors, and use your senses to check for problems...LOOK, LISTEN, AND SMELL.
221. Why should you be in the proper gear before starting down a hill?
b. You will not be able to shift into a lower gear once you are going down a hill.
222. What is an advantage of going right instead of left around an obstacle?
c. If you are blocked on both sides, a move to the right won't force anybody into an opposing traffic lane and a possible head-on collision.
223. Name two situations were legal maximum weights may not be safe to haul:
a. During bad weather or in mountains.
224. What three things related to cargo are the driver's responsibility?
a. Inspecting the cargo, recognizing overloads, and properly securing the cargo.
225. What is a hazardous materials placard?
a. Signs put on the outside of a vehicle which identify the hazard class of the cargo.
226. What must you check before transporting a sealed load?
b. That the load is properly secured.
227. How do you calculate how many seconds of following distance space you have?
a. Wait until the vehicle ahead of you passes a clear landmark, then count off the seconds until you reach the same spot.
228. What is a "pull-up"?
c. Pulling forward while backing a trailer to reposition it.
229. What should wheel bearing seals be checked for?
a. Leaks.
230. Select the proper collision procedures that are required for any collision that you are involved in; in which you are not seriously injured.
f. All of these are required.
231. The tendency for long commercial vehicles to swing wide on turns is called:
a. Off-tracking.
232. What should you do if you get stuck on the railroad tracks?
b. Get out of your vehicle and away from the tracks.
233. Which of these is good thing to remember about drinking alcohol?
a. Alcohol first affects judgment and self-control.
234. Which of these statements is true about medicines used to treat the common cold?
c. It often makes you sleepy thus should not be used while driving.
235. The total weight of the powered unit, the trailer, and the cargo is called:
b. Gross combination weight.
236. Which piece of emergency equipment should be in your vehicle?
c. Warning devices for parked vehicles.
237. Which of these statements is true about causes of vehicle fires?
c. Poor trailer ventilation can cause flammable cargo to catch on fire.
238. Which of these statements is true about vehicle fires?
c. A burning tire should be cooled with water.
239. Which of these statements is true about brakes.
a. Brakes absorb more heat to stop heavier vehicles.
240. Which of the following does not provide extra gears on some trucks?
a. Automatic transmissions.
241. Which of these is not a danger when an automatic transmission is forced into a lower gear at a high speed?
c. Loss of steering control.
242. Which of these statements is true about backing heavy vehicles?
a. You should avoid backing whenever you can.
243. The distance you should look ahead ___while driving at highway speeds.
b. 1/4 mile.
244. The Commercial Driver's Handbook suggests several things to do when you pass a vehicle. Which of these is NOT one of them?
b. At night, turn on your high beams while you pass the vehicle.
245. Which of these statements is true about speed management?
c. On slippery roads, it takes longer to stop and is harder to turn without skidding.
246. You are driving a heavy vehicle and must exit a highway using an off ramp that curves downhill. You should:
a. Slow down to a safe speed before taking the curve.
247. Which of these is a good thing to do when driving at night?
a. Drive slowly enough to stop within the range of your headlights.
248. Which of these is NOT something you should do if your headlights are not working properly?
b. Leave your high beams on.
249. When roads are slippery you should:
c. Make turns as carefully as possible.
250. You should avoid driving through deep puddles or flowing water but if you cannot, which of these steps can help keep your brakes working?
a. Gently putting on the brakes while driving through the water.
251. Which of these is true about the radiator shutters and the winterfront?
b. You should remove ice from the radiator shutters.
252. Which of these statements is NOT true about engine belts in hot weather?
a. Cracking is likely to occur but it is not a safety threat.
253. What should you do if you see a hazard in the roadway?
c. Use your 4-way flashers or brake lights to warn others.
254. A car suddenly “cuts” in front of you creating a hazard. What should you NOT do?
a. Honk and stay close behind the car.
255. Your vehicle has hydraulic brakes. When traveling on a level road, you press the brake pedal and find that it goes to the floor. Which of these statements is true?
b. Pumping the brake will generate enough pressure to stop the vehicle.
256. Bridge formulas permit:
a. Less maximum axle weight for axles that are close together.
257. You are checking your steering and exhaust systems in your pre-trip inspection. Which of these problems should be fixed before the vehicle is driven?
c. Steering play- more than 10% (2 inches on a 20 inch wheel).
258. Which of these items is NOT checked on a pre-trip inspection?
c. Amount of fuel in the vehicle.
259. One can recognize hazardous materials by looking at the container's:
a. Label.
260. If you must stop on a hill in a two-way, two-lane road. How far back should you place your reflective triangles?
b. Within 500 feet behind the vehicle.
261. Which of these is true about hours of service?
c. You should balance your hours of service with enough sleep to keep you alert.
262. You should try to park your vehicle so:
a. You can pull forward when you leave.
263. Which of these is NOT a proper use of vehicle lights?
c. Flashing your brake lights to stop someone from tailgating.
264. Which of the following is NOT a type of retarder?
c. Robotic.
265. What is the first thing you should try to do if your brakes fail while driving downhill?
c. Get off the road as soon as possible.
266. When you drive in the mountains, you will have to use lower gears to drive safely down grades. Which of these does NOT affect your choice of gears?
b. Tire tread type.
267. Which of these is NOT caused by rough acceleration?
a. Tire damage.
268. Which of the following statements is true?
c. Many heavy vehicle accidents occur between midnight and 6 am.
269. Which of the following may be a sign of tire failure?
c. Wheels fishtailing.
270. Which of these statements is NOT true?
b. A drinker can control how fast his or her body absorbs and gets rid of alcohol.
271. Optional safety equipment may include emergency phone numbers, tire chains, and:
a. Tire changing equipment.
272. The braking effect of the engine is greatest when the engine is ___ the governed RPM's and the transmission is in the ___ gears.
c. Near, lower.
273. The best drivers are those who watch and prepare for hazards. This is called being:
a. Defensive.
274. What will help keep an engine cool in hot weather?
c. Making sure the engine has the right amount of oil.
275. Which of these statements is true regarding the use of drugs while driving?
a. Prescription drugs are allowed as long as the doctor says the drugs will not affect safe driving ability.
276. Which of these statements is true about warning other drivers of a stopped vehicle?
a. Move the rear reflective triangle back if the driver's vision is obscured to within 500 feet.
277. If you have a heavy load that is slowing you down on an upgrade you should:
c. Shift into a lower gear.
278. Which of these statements is NOT true about backing a heavy vehicle?
b. You should back slowly until you slightly bump into the dock.
279. In your mirror you see a car approaching from the rear. The next time you check your mirror you don't see the car. To change lanes you should:
a. Wait until you are sure the car isn't in your blind spot.
280. What should you do if a car coming towards you at night keeps it's high beams on?
c. Look to the right edge of your lane or the right edge of the road.
281. Which of these is especially true about your tires in hot weather?
a. You should check tire mounting and air pressure before driving.
282. When driving through roadway work zones, you should:
c. Watch for sharp pavement drop-offs.
283. Which of these statements is true about bad weather driving conditions?
a. When the temperature drops, bridges will freeze before roadways.
284. Which of these statements is true about other drivers?
c. Short-term or daily rental truck drivers are often not used to the limited vision and pose a hazard.
285. Which of these will happen if a tire blows out at highway speeds?
c. A vibrating feeling.
286. To prevent "brake fade" you should:
a. Select a gear that will keep your vehicle to a safe speed on steep downgrades.
287. If you have been drinking alcohol, before you drive, you should:
b. Wait for it to wear off.
288. Which of the following best describes how sleep debt can be paid off?
c. It can only be paid off by sleeping.
289. Which of these statements is true about drugs?
a. The use of alcohol or drugs can lead to collision and/or arrest.
290. "Implied consent" means when you sign the driver's license application form, you:
b. Give your consent to be tested for alcohol in your blood.
291. You should use your mirrors to check:
c. Where the rear of your vehicle is while you make turns.
292. Convex curved mirrors:
c. Show a wider area than flat mirrors.
293. The purpose of retarders is to:
a. Help slow the vehicle while driving and reduce brake wear.
294. It is important to shift gears correctly to keep:
a. Control of the vehicle.
295. A helper should be used to help back your vehicle:
b. Whenever possible.
296. You should signal continuously while turning because:
a. You need both hands on the wheel to turn safely.
297. When approaching a traffic light that has been green for a long time, you should:
b. Start to slow down so you will be ready to stop.
298. What three things add up to total stopping distance for your truck or bus?
c. Perception distance, reaction distance, braking distance.
299. If you cannot see well with your headlights when driving in an area with few streetlights on a clear night, you should:
c. Use your high beams when legal and keep your interior light off.
300. When driving at night, use your low beams, when an oncoming vehicle is within:
c. 500 feet.
301. If your brakes get wet while driving on a rainy day, what can happen when you apply the brakes?
c. Trailer Jackknife.
302. Which of these is a danger of crossing railroad tracks on dirt roads?
b. You could get hung up halfway across the tracks.
303. A key principle to remember about loading cargo is to keep the load:
c. Balanced in the cargo area.
304. Containerized loads:
b. Are generally used for freight carried part way by rail or ship.
305. Can federal inspectors inspect your truck or bus?
b. Yes, and they can place it out of service.
306. Which of these is NOT required knowledge for drivers needing HAZMAT endorsement?
c. Basic chemistry.
307. When driving on grades, which of these is the best choice for a safe speed?
b. Based on your vehicle and it's cargo, select a speed that is safe within the posted limit.
308. Trucks and buses are subject to certain laws, restrictions, and regulations. Which of these statements is true?
c. Laws and restrictions can vary from place to place.
309. When a doctor prescribes medication for you and you know you will be driving, you should:
c. Ask the doctor if the medication will affect your ability to drive.
310. You should schedule your driving:
c. For the hours you are normally awake.
311. Stab braking should not be used on vehicles with:
c. Anti-lock brakes.
312. If you do not have a CB radio, what is the first thing you should do at an accident scene?
b. Protect the accident scene.
313. When driving in cold weather conditions, your tire tread should:
c. Provide enough traction to steer and push the vehicle through snow.
314. When you are passing another vehicle, pedestrian, or bicyclist you should assume that they:
c. May move into your traffic lane.
315. Which of the following cannot be checked at the same time:
b. Brake lights, flashers, and turn signals.

So this is all for now. I hope it is the interesting information for you. I’d be glad if I help you.