Drivers Ed Chapter 12

Chapter 12 Lesson 2

1. The amount of distance you need to stop the car increases with speed. True 2. If you double your speed, you will need four times the distance to stop. True 3. Vehicle-braking distance is the distance your vehicle travels after you see a problem and before you apply the brakes. False. How far you vehicle travels between when you first apply the brakes and when the car stops 4. Total stopping distance is the distance it takes from the moment you see a problem until your vehicle is stopped. True 5. A 3,000-pound vehicle traveling at 60 mph will require about 300 to 500 feet to stop. False. Identify objects 12-15 seconds ahead of you 6. If a vehicle is tailgating you or a large vehicle is behind you, identify a path for evasive steering. True 7. The condition of the road surface affects total stopping distance. True

Chapter 12 Lesson 4

1. Perception distance, reaction distance, and braking distance make up total stopping distance. True 2. Braking is a result of friction between the brake linings and your foot. False. Brake lining and pad 3. Braking distance is greater on a smooth road. False. Reduced 4. Your braking distance decreases if you are going downhill. False. It increases 5. Your ability to steer a vehicle depends partly upon the condition of the vehicle's suspension. True 6. Directional control is a vehicle's ability to hold a straight line. True 7. A banked road is higher on the inside of curves than on the outside. False. Higher on the outside than on the inside 8. A crowned road is higher in the center of the road than on the edges. True

Chapter 12 Tests

CHAPTER 12 Test A _____ 1. The natural laws include the law of a. speed limits. b. gravity. c. railroad crossings. d. yielding. B _____ 2. Whether you need to speed up or slow down is determined by a. how quickly you need to get somewhere. b. how far above the speed limit you are traveling. c. the location of other vehicles in traffic. d. the time of day. C _____ 3. Human-reaction distance generally adds how much to total braking distance? a. up to 20 feet b. up to 30 feet c. up to 55 feet d. up to 66 feet D _____ 4. At 60 mph, on dry pavement, the vehicle-braking distance for a 3,000-pound vehicle to come to a stop is a. 75 feet. b. 100 feet. c. 160 feet. d. 200 feet. C _____ 5. Braking capability depends on a. brake alignment and pad material. b. tire pressure and suspension system. c. wind speed and the slope of road. d. all of the above. D _____ 6. A car moving at 60 mph will take how much time to come to a complete stop? a. 3 to 5 seconds b. 4 to 6 seconds c. 8 to 10 seconds d. 10 to 15 seconds B _____ 7. Doubling your speed multiplies your braking distance by a. two times. b. three times. c. four times. d. eight times. C _____ 8. The minimum legal tread depth for the tires on your vehicle is a. 1/32 inch. b. 1/16 inch. c. 1/4 inch. d. 1 inch. B 9. What reduces traction even more than rain? a. ice b. gravel c. asphalt d. leaves A 10. The speed that keeps the driver traveling safely is called the _____ speed. appropriate 11. The closer you must drive to an object, the _____ your speed should be. slower 12. The total stopping distance of a vehicle is made up of human-perception distance, human-reaction distance, and _____ . vehicle braking distance 13. At 55 mph, it only takes _____ of water for tires to lose contact with the road. 1/12 14. After driving through heavy rain or deep puddles, you should always check for _____ . wet brakes 15. A vehicle's ability to hold a straight line or to continue in a particular direction is called _____ . directional control 16. When you are driving through a turn and the rear of the car slides around, that is called _____ . oversteer 17. When driving in the right lane on a two-way crowned road, gravity will tend to pull your vehicle to the _____ . right 18. To help estimate driving distances, you can use _____ as a general guide because they are evenly spaced. telephone poles 19. What can you do to lessen the force of impact in a head-on collision? reduce your speed and try to avoid the oncoming vehicle as best as you can _____ 1. In addition to weather and the road surface, the quality of what can have an effect on traction? a. the engine b. the driveshaft c. the steering wheel d. the suspension D _____ 2. Smaller cars with lower centers of gravity are a. more stable than cars with higher centers of gravity. b. less stable than cars with higher centers of gravity. c. the same as any other car. d. none of the above. A _____ 3. You can raise a car's center of gravity by a. putting more people in it. b. filling the trunk. c. loading a roof rack with items. d. driving more quickly. C _____ 4. When driving on a crowned road, you can gain more control of your vehicle by a. pulling the wheel to the left. b. pulling the wheel to the right. c. slowing down. d. driving in the middle of the road. C _____ 5. The three major highway conditions that require you to adjust speed are changes in visibility, traction, and space. True _____ 6. You do not need to slow down if you cannot keep a safe distance between your vehicle and another, as long as you think you can stop in time. False _____ 7. The amount of air pressure in your tires does not affect traction. False _____ 8. Centrifugal force pushes you in the direction opposite to the way you are turning. True _____ 9. A banked curve works with the force of gravity to help you stay on the road through the turn. True _____ 10. total stopping distance d. the distance it takes to stop a vehicle _____ 11. human-perception distance i. the distance traveled from the time your eyes see a hazard to the time your brain recognizes it _____ 12. banked roads e. roads built higher on the outside than on the inside _____ 13. vehicle-braking distance h. the distance the vehicle travels once the brakes have been applied _____ 14. inertia a. states that objects at rest do not move unless some force acts on them _____ 15. friction b. the force between two surfaces that resists the movement of one surface across the other _____ 16. adhesion c. sticking together _____ 17. kinetic energy g. the energy of motion _____ 18. momentum j. a combination of an object's weight and speed _____ 19. crowned roads f. roads built higher in the center than at either edge

Chapter 12 Book Work

Chapter 12 Lesson 1 Review 1. Changes in visibility, traction, and space 2. The location of other vehicles determine if you should speed up or slow down 3. An appropriate speed that keeps the driver traveling safely Chapter 12 Lesson 2 Review 1. Human-perception distance, human-reaction distance, and vehicle-braking distance 2. 30mph= 82- 103.5 ft; 50mph= 179- 215 ft; 60mph= 238- 282 ft. 3. The time it takes the vehicle to begin slowing down once the brake pedal is applied Chapter 12 Lesson 3 Review 1. Tire pressure, tire condition, rain, ice and snow, road conditions 2. The lower an object's center of gravity, the more stable the object 3. Laws of inertia, friction, momentum, kinetic energy, and gravity Chapter 12 Lesson 4 Review 1. Speed- the greater the speed, the greater the momentum, and the longer the braking distance. Gravity- can make vehicles speed up or slow down. Traction- holds your vehicle to the ground. 2. Less traction means you have to put more input in the car; steering can create traction or get rid of it, inertia the faster and harder you turn make more input on the steering wheel 3. They will pull the car to the outside of the curve 4. Pulls you off the road, water and other substances will run you off the side of the road. Chapter 12 Assessment 1. B 2. C 3. A 4. A 5. B 6. C 7. Kinetic energy 8. Inertia 9. Traction 10. Center of gravity

Chapter 12 Lesson 1

1. What is the path of travel like in the lane you are in? you need to know if the vehicles ahead of you are slowing down or stopping 2. What is the path of travel like in the lane you want to enter? you need to know if the lane you're entering is clear next to you and 20-30 seconds ahead of you 3. Are other vehicles signaling to move into the lane you want to enter? it's important to not collide with other vehicles that are entering the same lane 4. What is happening in the lanes behind you? you should be aware of any vehicles tailgating or coming up fast behind you 5. How fast are you going? Can you change lanes without exceeding the speed limit? you should not exceed the speed limit to change lanes 6. Do you have room to make the move safely? there should be a large enough gap in the flow of oncoming and ongoing vehicles 7. How much of a gap is there between vehicles in the lane you are moving into? you should have a safe gap between any vehicles ahead of you so that you can pull into the lane safely after passing the other car

Chapter 12 Lesson 3

1. inertia C 2. friction E 3. traction A 4. momentum F 5. kinetic energy B 6. center of gravity D 1. When you brake quickly and your books and packages on the backseat fall onto the floor, the force at work is ______. inertia 2. The force that makes your tires "stick" to the surface of the road is called _____. friction 3. Two vehicles going at the same speed hit the same brick wall, but the one that weighs more sustains much more damage. This is an example of ______. momentum 4. The faster a vehicle moves, the more _____ energy it has. kinetic 5. The force that slows your vehicle going uphill is called _____. gravity