HOW TO DRIVE TEST 3 STUDY SET

5. When turning or curving the contact patches of the increase to the right, in size. a. Front tires b. Rear tires c. Right side tires d. Left side tires

Left side tires

Name 5 substances that reduce traction

Sewer covers Tar Mud Loose gravel Sand

4. When braking hard, the weight of the vehicle noticeably shifts. a. To the rear of the vehicle b. To the front of the vehicle c. To the left of the vehicle d. To the right of the vehicle

To the front of the vehicle

Natural laws affect vehicles traveling up and down hills. Explain how hills influence your vehicle speed at the ability of drivers to accelerate And decelerate

When you are driving uphill, the force of gravity is working against you to slow you down, and you may need to accelerate or shift to a lower gear to maintain your speed. When you are driving down hill, gravity tends to boost speed, which increases braking and stopping distances.

3. If a vehicle's speed doubles, e.g., from 20 mph to 40 mph, the distance needed to stop the vehicle increases by_ times. a. 2 b. 3 с. 4 d. 8

4

1. To allow enough distance to stop when responding to hazardous objects or conditions, you should identify a planned path of travelseconds ahead. a. 2-4 b. 12-15 с. 20-30 d. 50-60

12-15

Explain the relationship between inertia and traction

An object in motion will continue to move straight ahead until acted upon by an outside force. As the car travels through a curve or a turn, inertia tends to keep it moving straight ahead, rather than allowing the vehicle to turn. Unless traction is great enough to overcome inertia, the car slides to the outside of the turn.

2. List and explain factors that affect traction between a vehicle's tires and a road surface.

Any substance on a road surface can reduce traction.(Sewer covers, Paint used for road markings, Vinyl strips, Tar, Wet leaves, Sand, Loose gravel, Mud) Poor road conditions (rippled or broken pavement surfaces, Be alert when roads are wet (in 1st mins of rainfall, dirt and oil can rise and mix on roadway surfaces, making them surprisingly slippery. Temp. Change- As the temperature rises from below freezing to approximately 32F, icy and snow-packed areas become more slippery. Wet ice is much more slippery than dry ice. Intersections are likely to be slicker because starting and stopping vehicles "polish" the ice. Road design- Features can influence traction and control. (Banked, crowned, uneven shoulder) Shoulders- the immediate off-road areas on the left end or right sides of a Road or Highway. Shoulders frequently provide the only escape pass In any emergency. However, the shoulders of most highways provide less traction than the road surfaces. Other factors- bridge surfaces, highway overpasses, wind gusts etc

1. Define hydroplaning, and explain how drivers can prevent hydroplaning from happening.

At speeds as low as 35 miles an hour and a water depth of only 1/12 inch, hydroplaning can occur. Similar to a phenomenon that makes waterskiing possible, when a vehicle hydroplanes, it's tires rise up on the edge of water. The vehicle's speed, the depth of water on the road, and tire inflation, width, and tread all influence the speed at which it will hydroplane and potentially crash.

2. -provides less traction than when driving on concrete. a. Asphalt b. Gravel c. Brick d. All of the above

d. All of the above