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Vehicle Safety and Protective Devices

Learn about important terms such as gravity, braking distance, kinetic energy, traction, and more. Understand the factors that affect braking distance and the importance of protective devices for safe driving.

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Vehicle Safety and Protective Devices

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  1. Chapter 5

  2. Find the following definitions • Gravity. Braking distance • Stopping distance. Active Restraint • Kinetic energy. All Wheel Drive • Traction. Reaction distance • Force of impact. Perception distance • Total stopping distance. Friction • ABS. • passive restraint

  3. Under inflated tires - outer edges only contact the road • Overinflated tires - only center of tire grips road • Cold - tire pressure will decrease • Hot - tire pressure will increase

  4. A vehicle driven into a curve wants to go in what direction? • Straight • What side of the curve is higher on a "banked curve"? Inside or Outside • Outside

  5. What is the number of seconds used to estimate your total stopping distance under ideal conditions? • 4 seconds • What is "split traction"? • When braking and turning, you use some of your traction to turn and some to slow down/speed up

  6. Energy of motion - a vehicle stopping distance is in proportion to the square of it's change in speed. • Eg. A vehicle going 2x as fast needs 4x the distance to stop • Eg. A vehicle going 3x as fast needs 9x the distance to stop

  7. What are some factors that affect your braking distance? • Speed/vehicle condition / road surface/driver ability/ABS/hills/loads(weight of vehicle)

  8. Protective devices

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