★ HYDROPLANING, Driving in Rain, Water 2 -Defensive Driving, Traffic School, Drivers Ed Test Answers

_________ occurs when a thin film of water builds up between the tires and pavement and makes steering and braking practically impossible.
➜ This occurs when a layer of water builds between the wheels of the vehicle and the road surface, leading to a loss of traction that prevents the vehicle from responding to control inputs.
A.) Hydroplaning
B.) Velocitation
C.) Highway hypnosis
D.) Skidding

Get the Correct ANSWER

Hydroplaning

---

In a heavy rain your tires can lose all contact with the road. This is called __________.
A.) skidding
B.) floating
C.) skiing
D.) hydroplaning

Get the Correct ANSWER

hydroplaning

---

Hydroplaning only occurs to aircraft during landing.
A.) TRUE
B.) FALSE

Get the Correct ANSWER

FALSE

EXPLANATION: Hydroplaning is when traction is lost as the wheels start to ride on the water and not on the road surface. Hydroplaning is when the vehicle tires ride on a layer of water above the roadway. Hydroplaning may occur when you drive over water. When a tire is hydroplaning it is riding on the surface of the water instead of making contact with the road surface.

---

A vehicle with properly inflated tires having good tread can begin to hydroplane at____________mph when there is as little as 1/12th of an inch of rain on the roadway.
A.) 40
B.) 55
C.) 65
D.) 35

Get the Correct ANSWER

55

---

When a tire is ________________it is riding on the surface of the water instead of making contact with the road surface.
A.) inflating
B.) deflating
C.) treading
D.) hydroplaning

Get the Correct ANSWER

hydroplaning

---

If you start to hydroplane, which of the following should you do?
A.) put a heavy load on the rear end of your vehicle
B.) take your foot off the gas
C.) brake harder than normal
D.) drive faster than normal
E.) turn into the skid

Get the Correct ANSWER

take your foot off the gas

---

2. If your vehicle starts to hydroplane, you want to
A.) accelerate
B.) brake
C.) take your foot off the gas
D.) use your emergency brake
E.) pump the gas pedal

Get the Correct ANSWER

take your foot off the gas

---

Hydroplaning can occur in as little as:
➜ Hydroplaning can occur in as little as how much water
➜ How many inches of water can cause hydroplaning
➜ As little as __________ of one inch of water can cause hydroplaning.
A.) 1 inch of water.
B.) 1/2 inch of water.
C.) 1/16th of an inch of water.
D.) 1/32nd of an inch of water.

Get the Correct ANSWER

1/16th of an inch of water.

---

Hydroplaning can cause __________
A.) a tire blowout.
B.) a jammed gas pedal.
C.) skidding.

Get the Correct ANSWER

skidding.

---

Vehicle's traveling at speeds as low as 35 mph can hydroplane.
A.) TRUE
B.) FALSE

Get the Correct ANSWER

TRUE

---

Driving through large bodies of water can affect
A.) A. Brake performance
B.) B. The interior of the car
C.) C. Electrical system
D.) D. Both A and C

Get the Correct ANSWER

Both A and C

---

When does hydroplaning occur?
➜ When does hydroplaning occur i drive safely answer
A.) To older vehicles only
B.) When one or more of your tires loses contact with the road surface
C.) Only at night
D.) On wet dirt roads only

Get the Correct ANSWER

When one or more of your tires loses contact with the road surface

---

Hydroplaning can occur if tires have less than 1/16 of tread. True or false
A.) TRUE
B.) FALSE

Get the Correct ANSWER

TRUE

---

Moving or standing water about 2 feet deep can carry away a 3,000 pound vehicle.
A.) TRUE
B.) FALSE

Get the Correct ANSWER

TRUE

Two feet of water will carry away most cars - 1,000 pounds of lateral (or side force) plus 3,000 pounds of buoyancy!

---

If water on the road surface is 1/12 of an inch, at what speed can you loose total traction
➜ If water on the road surface is 1/12 of an inch, at what speed can you lose total traction
ANS: 55 mph

A vehicle traveling at an excessive speed on wet or slick roads can begin to _______________ as water forms a barrier between the road and the tires.
A.) crash
B.) stop
C.) slow
D.) hydroplane

Get the Correct ANSWER

hydroplane

---

2. If you pass through a body of standing water, you can dry your brakes off by:
A.) driving along as if nothing happened
B.) gently pumping your brakes
C.) Slamming your brakes
D.) none of the above

Get the Correct ANSWER

gently pumping your brakes

Gently pumping your brakes can help dry them off.

---

In wet conditions, if you hydroplane, you should
A.) brake or turn suddenly, to get out of it.
B.) press the gas pedal.
C.) gently pump the brake pedal if you need to brake.
D.) take your hands off the wheel

Get the Correct ANSWER

gently pump the brake pedal if you need to brake.