General Knowledge Test 9 Welcome to your General Knowledge Test 9 Name Email 1. Which of the following statements about hazardous materials placards is true? They must be affixed to every vehicle transporting hazardous materials. They must be affixed to all four sides of a vehicle. They must be affixed only to the front and rear of a vehicle. None 2. Why can tourists be hazards? They may drive slowly and make sudden stops or lane changes. They often drive rental cars. Law enforcement officers will not give them a ticket. None 3. You are driving a tractor-trailer. If the tractor has antilock brakes (ABS) but the trailer doesn't, the chance of jackknifing will increase. you will have more control over the vehicle than if the tractor lacked ABS. the chance of a rear-wheel skid will increase. None 4. Which of these statements about marking a stopped vehicle is true? If a hill or a curve keeps drivers behind you from seeing your vehicle within 500 feet, move the rear reflective triangle back down the road to give adequate warning. Keep your vehicle's taillights on to warn other drivers. You must set out your emergency warning devices within 5 minutes. None 5. If you must use a hand-held cell phone while you're driving, what should you do? Slow down. Position the phone so you can see the road in front of you. Stop in a safe and legal location. None 6. Which of these statements about shifting gears is true? Double-clutching should not be performed when the road is slippery. You can use the tachometer to tell you when to shift. Double-clutching should only be performed with a heavy load. None 7. You can use your retarder only where allowed by law. only when traveling downhill. only on slippery roads. None 8. When driving in work zones, you should use your four-way flashers and brake lights to warn others. pull over. slow down only if workers are present. None 9. The stopping distance of a tractor-trailer traveling at 45 mph on dry pavement is approximately the length of a football field. twice the length of the vehicle. half the length of a football field. None 10. In which of these situations can strong winds most affect your driving? Driving around a sharp curve Exiting a tunnel Driving on a straightaway None 11. If you must stop your vehicle beyond a curve that hides your vehicle from other drivers within 500 feet, place a reflective triangle up to 500 feet behind the vehicle. as far back as necessary to warn other drivers. up to 200 feet behind the vehicle. None 12. To estimate a person's blood alcohol concentration (BAC), you need to know how much alcohol the person consumed and how much the person weighs. how old the person is. how often the person drinks alcohol. None 13. You are starting your vehicle in motion from a stop. As you apply power to the drive wheels, they start to spin. What should you do? Try a lower gear. Take your foot off the accelerator and apply the brakes. Take your foot off the accelerator. None 14. Your tractor-trailer's brakes can get wet when you drive through heavy rain. What can this cause when you apply the brakes? Excessive brake wear Hydroplaning Trailer jackknife None 15. What is aggressive driving? Driving in a selfish or pushy manner Driving while your attention is directed elsewhere Intentionally driving to harm someone None 16. If you are confronted by an aggressive driver, what is the most important thing you should do? Get out of the driver's way. Stand your ground. Signal to the driver that you made a mistake. None 17. A load that is over-length, over-width, or overweight requires a special transit permit. requires a police escort or pilot vehicles. can only be transported on freeways. None 18. If you must take emergency action to deal with a hazard, you should remember which of the following? You can almost always stop more quickly than you can turn. To turn quickly, keep a firm grip on the steering wheel. Stopping is always the safest thing to do. None 19. You will be placed out-of-service for 24 hours if your Blood Alcohol Concentration (BAC) is at least 0.02%. at least 0.04%. any detectable amount. None 20. Which of the following is true about using a heater while you're driving in winter weather? Federal regulations require mirror heaters in below-freezing weather. Before you drive, make sure that the cab heater is working. If you feel drowsy, warm up your cab with the heater. None 21. When you inspect your vehicle during cold weather, you should pay particular attention to the steering system. the suspension system. the exhaust system. None 22. Which of these statements about tires is true? In very hot weather, you should inspect your tires every two hours or every 100 miles. If the tires are too hot to touch, let 5–10 pounds of air pressure out to cool them down. The air pressure of a tire decreases as the temperature of the tire increases. None 23. If your truck is transporting cargo, you must check the securement of the cargo within the first ____ miles of the trip. 150 100 50 None 24. Is it always dangerous to back up a CMV? Not if you're backing in a straight line. Not if you have a helper. Yes. None 25. Your vehicle has hydraulic brakes. If the brakes fail while you're driving, what should you try? Shift into neutral and apply the parking brake. Press the brake pedal as hard as you can. Pump the brake pedal. None 26. Perception distance is the distance that your vehicle travels from the time that your eyes see something, to the time that your brain recognizes it. from the time that your brain decides to brake, to the time that you start to press the brake pedal. from the time that your eyes see something, to the time that you start to press the brake pedal. None 27. How should you react to an aggressive driver? Give the driver the benefit of the doubt. Smoke a cigarette to relax. Eat a snack to raise your blood sugar level. None 28. Under which of the following situations must you stop at a railroad grade crossing? Traffic is heavy on the road you are driving on. There are no warning devices or flagpersons at the grade crossing. The cargo you're carrying makes stopping mandatory under federal or state regulations. None 29. Which of the following is true about escape ramps? They cannot be used by tractors pulling doubles or triples. They can be used by any vehicle whose brakes have failed. They help slow a vehicle so it can get back on the road safely. None 30. You are driving a tractor-trailer at 55 mph on dry pavement. About how much total distance will you need to bring it to a stop? Half the length of a football field The length of a football field Twice the length of the vehicle None 31. When you drive through a work zone, you should slow down even more when workers are present. turn on your parking lights. increase your speed if no construction is currently taking place. None 32. Which of these statements about controlling your vehicle's speed is true? Fully loaded trucks require greater stopping distances than empty trucks. If you double your speed, it will take you twice as long to brake to a stop. Choose a speed that lets you stop within the distance you can see ahead. None 33. When you drive on roads whose speed limits for CMVs are lower than for cars, you should use extra caution when you change lanes or pass. drive at about the same speed as the other CMVs. drive at about the same speed as the cars. None 34. Which of the following is true about using engine braking on a downgrade? You should NOT use engine braking as the main way to control speed. The use of brakes adds to the braking effect of the engine. Engine braking creates extra heat between the brake shoes or pads and the drums or discs. None 35. Why will your vehicle's speed naturally increase on downgrades? Lack of traction Smoother engine performance Gravity None 36. Which of the following statements about downshifting is true? Downshift after you've entered a curve. When double clutching, let the engine slow down while the transmission is in neutral and the clutch is released. Downshift before you enter a curve. None 37. ABS uses computers and sensors to determine the condition of the brakes. when a wheel may lock up. the condition of the roadway surface. None 38. If you park at the side of the road, you should turn on your four-way flashers. keep your vehicle's taillights on. set out your emergency warning devices within 30 minutes. None 39. In a moving vehicle, you should wear your seatbelt only when you are driving. only when traveling on a highway. at all times. None 40. Which of these vehicles is most likely to be affected by strong winds? A straight truck loaded with cargo A tractor pulling a loaded flatbed A tractor pulling empty doubles None 41. You are checking your brakes and suspension system during a pre-trip inspection. Which of these statements is true? Brake shoes should not have oil, grease, or brake fluid on them. Just one missing leaf spring is not dangerous. Spring hangers that are cracked but still tight are not dangerous. None 42. Your vehicle has hydraulic brakes. While traveling on a level road, you press the brake pedal and find that it goes to the floor. Which of these statements is true? Pumping the brake pedal may raise hydraulic pressure so you can stop the vehicle. Shifting into neutral will help slow the vehicle. The parking brake will not work either because it is part of the same hydraulic system. None 43. Which of these would probably NOT help if your windshield becomes covered with ice? Brush Defroster Scraper None 44. While you're driving at low speeds, what distance should you look ahead of your vehicle? One Block Half a Block Two Blocks None 45. If you must care for the injured at an accident scene, you should NOT move severely injured persons if there is a danger from fire or passing traffic. stay out of the way if a qualified person is already helping them. allow injured persons to become chilled. None 46. 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? Steer to the right. Steer onto the left shoulder. Brake hard. None 47. How should you merge safely onto a freeway or expressway? Wait for a large enough gap in traffic in the nearest lane before you merge. Accelerate on the shoulder to highway speed before you merge. Edge slowly into the nearest lane to force other drivers to leave you room. None 48. You may get hung up on railroad tracks if you try to shift gears when crossing. the tracks have a steep approach. you cross double tracks too slowly. None 49. You are driving at 50 mph on a straight, level highway. There are no vehicles in front of you. Suddenly a tire blows out in your vehicle. What should you do first? Begin emergency braking. Stay off the brake until your vehicle has slowed down. Begin light braking. None 50. To drive down a mountain road safely, you'll have to downshift into lower gears. Which of these should NOT affect your choice of gears? Type of tire tread Length of the downgrade Weight of the load None 1 out of 50 Time's up
