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Oklahoma driving lesson · Stopping and Following

Ice, rain, skids and hydroplaning

A 3-minute lesson from the Oklahoma course. Read the rules and examples, follow the handbook page references, and check your understanding before you move on.

Read time
3 minutes
Course unit
Stopping and Following
Checkpoint questions
6
Source pages
43, 44

Slick roads cut your traction and lengthen your stops. On ice there is very little you can do once a skid starts, so the best skid control is prevention. In rain, the first few minutes are the most dangerous.

Know the rule

When road or weather conditions could make you lose control, drive cautiously, slow down, and be ready for an emergency, for the drivers ahead as well as yourself.

Handbook p. 43 ↗

Black ice

A clear icy coating on the road surface that you can't see. Watch for it on roads that seem clear, especially on bridges and in shady areas.

Handbook p. 43 ↗

Know the rule

Get the feel of the road: test your brakes gently after the car is moving to find out how much traction you have. Traction varies with traffic use and sunshine or shade.

Handbook p. 43 ↗

Know the rule

Sudden braking increases a skid. Don't use the clutch.

Handbook p. 43 ↗

Know the rule

As a general rule, if the car starts to skid, take your foot off the brake and turn the steering wheel in the direction of the skid, if you can do so without running off the road, hitting something or steering into oncoming traffic.

Handbook p. 43 ↗

Know the rule

Steering into the skid isn't always best: if you're meeting other traffic and your rear skids to the left, you wouldn't steer into oncoming traffic.

Handbook p. 43 ↗

Know the rule

The best advice for driving on icy roads is DON'T. Ask yourself: is this trip worth the risk?

Handbook p. 43 ↗

Know the rule

Roads are likely to be very slick just after it begins to rain or drizzle. The first few drops loosen built-up grease and dirt, covering the road with a slippery film.

Handbook p. 44 ↗

Hydroplaning

Your tires lose contact with the road and ride on a film of water. It reduces traction, increases stopping distance and makes turning more hazardous.

Handbook p. 44 ↗

Know the rule

Slow down whenever the road surface is wet to avoid hydroplaning. Wide tires can hydroplane even at reduced speeds.

Handbook p. 44 ↗

In heavy rain:

  • Slow down or pull off the road in a heavy downpour
  • Never drive into water crossing the roadway; you can't judge its depth or the force of the flow
Handbook p. 44 ↗

Put it into practice

It's the first drizzle after two dry weeks. The road looks only damp, but oil and dirt have just lifted into a slippery film. Slow down, add following distance, and brake gently.

Check your understanding

Read the question, decide on an answer, then open it to check the explanation. These are Roadwise study questions based on the source handbook.

When are roads often most slippery after rain begins?
  1. After an hour of steady rain
  2. Only during a downpour
  3. Roads are never slippery in light rain
  4. In the first few minutes of rain

Answer: In the first few minutes of rain

The first few drops loosen built-up grease and dirt, creating a slick film.

Handbook p. 44 ↗
You should try to drive through a flooded roadway if you're confident in your vehicle.
  1. True
  2. False

Answer: False

Never drive into water crossing the roadway; you can't judge its depth or the force of the current.

Handbook p. 44 ↗
What is 'black ice'?
  1. A clear icy coating on the road you can't see
  2. Dirty ice in visible black patches
  3. Ice mixed with road oil
  4. Ice that only forms on bridges

Answer: A clear icy coating on the road you can't see

Black ice is a clear, nearly invisible icy coating that's especially dangerous.

Handbook p. 43 ↗
How can you test how much traction you have on a potentially icy road?
  1. Accelerate hard to see if the tires spin
  2. Test your brakes gently while moving
  3. Turn sharply at normal speed
  4. There's no way to test traction while driving

Answer: Test your brakes gently while moving

Gently test your brakes once moving to get a feel for the roadway's traction.

Handbook p. 43 ↗
Your rear wheels start to skid to the left while meeting oncoming traffic. What should you NOT do?
  1. Take your foot off the brake
  2. Steer gently in a safe direction
  3. Steer toward the oncoming traffic
  4. Make small, calm corrections

Answer: Steer toward the oncoming traffic

Steering into the skid isn't always right — you wouldn't steer toward oncoming traffic if that's the skid direction.

Handbook p. 43 ↗
What happens to tires when a vehicle hydroplanes?
  1. They grip the road more tightly
  2. They lose air pressure
  3. They lock and stop turning
  4. They ride on a film of water

Answer: They ride on a film of water

Hydroplaning means your tires ride on a film of water, losing contact with the pavement.

Handbook p. 44 ↗
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