Chapter 3
Which surface provides the greatest amount of traction?
Snow
How many seconds ahead should you identify a planned path of travel
12 to 15 seconds
What is a safe following distance under most conditions?
3-4 seconds
At what minimum speed can hydroplaning occur?
35mph
How much stopping distance does a vehicle need if it's speed double?
4
What is inertia?
Doing nothing and will remain unchanged unless something moves it
Which way does the weight of the vehicle shift when braking hard?
Front
How much distance is needed to stop the vehicle is a vehicles speed doubles?
Increases by 4
What is the amount of energy needed to propel a vehicle called?
Kinetic, Inertia, Gravity
What maximizes traction and minimizes wight shifts?
Larger contact path
The __ a tire's contact patch, the __ traction the tire has the road surface?
Larger, more and smaller, less
How are the contact patches of a cars tires affected when turning
Left side tires
What is a product of mass and velocity which describes how much motion an object has?
Momentum
What is visual reference?
Part of car used for roadway, how you see something
How does gravity affect braking distance when driving downhill?
Shortens braking distance
How can you prevent hydroplaning?
Slow down and monitor water
What is traction?
The adhesion, friction, or grip between the tires and the road surface.
What causes a transfer of weight from one point of the vehicle to another?
Turning
What 3 factors determine the g-force of impact of moving objects?
Weight, speed, length of time between the crash and stop
What does D represent in safe drivers: R.E.A.D the road?
big donut of space around you