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Safe Driving in Fog and Smoke

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20 Questions

What is a major concern when driving through a flooded road?

Electrocution from fallen power lines

Why should you reduce your speed when driving in high winds?

To have more time to react to gusts

What should you do after driving through a flooded road?

Test your brakes

Why should you maintain a firm hand position on the steering wheel while driving in high winds?

To maintain control of the vehicle

What should you avoid using while driving in high winds?

Cruise control

When are fines doubled in highway construction or maintenance zones?

When workers are present

What is required of drivers when encountering emergency or road work vehicles?

Move over and slow down

What does a diamond-shaped sign on a truck indicate?

The truck is carrying hazardous materials

In what conditions must you drive slower?

In heavy traffic or bad weather

When towing a vehicle or trailer, which lane should you drive in?

The far-right lane or a lane marked for slower vehicles

What is recommended to avoid when driving in heavy fog or smoke?

Crossing lanes or passing traffic

What should you do if the fog becomes too thick to drive safely?

Activate your emergency flashers and wait for conditions to improve

What is the purpose of law enforcement traffic breaks during heavy fog or unusual traffic conditions?

To slow or stop traffic to remove hazards from the road

What should you do when approaching a law enforcement traffic break?

Turn on your emergency flashers and slowly decrease your speed

What should you avoid using when driving in heavy fog or smoke?

Your parking or fog lights only

What should you do when experiencing sun glare while driving?

Keep the inside and outside of your windshield clean and wear polarized sunglasses

Why should you avoid driving during sunrise and sunset?

Because of reduced visibility

What should you do when you encounter a vehicle with one headlight driving towards you?

Drive as far to the right as possible

Why should you reduce your speed in highway construction zones at night?

Because of reduced visibility

What can cause your vehicle to skid on the road?

Driving too fast on slippery surfaces

Study Notes

Safe Driving Practices

  • In heavy fog or smoke, consider postponing your trip until the fog clears, or drive slowly with low-beam headlights, and increase following distance.
  • In heavy fog or smoke, make sure you can stop within the space you can see ahead, and avoid crossing lanes or passing traffic unless absolutely necessary.

Law Enforcement Traffic Breaks

  • During a traffic break, an officer turns on their emergency lights and slowly weaves across lanes to slow or stop traffic.
  • When encountering a traffic break, turn on your emergency flashers, slow down, keep a safe distance from the patrol vehicle, and do not drive past the patrol vehicle.

Flooded Roads

  • Be cautious when driving on flooded roads, as excess water can sweep you off the road, conceal hazards, or cause vehicle malfunctions.
  • If possible, find an alternative route, and if not, drive slowly and test your brakes after crossing the water.

High Winds

  • Reduce speed when driving in high winds, especially with larger vehicles, to maintain control and react to gusts.
  • Maintain a firm grip on the steering wheel, be alert, and avoid using cruise control.

Hazardous Loads

  • Be aware of diamond-shaped signs on trucks, indicating hazardous loads, which must stop before crossing railroad tracks.

Heavy Traffic or Bad Weather

  • Drive slower in heavy traffic or bad weather, but avoid blocking normal traffic flow by driving too slowly.


  • When towing a vehicle or trailer, drive in the far-right lane or a lane marked for slower vehicles.

Night Driving

  • Use low-beam headlights when driving at night, and reduce speed in highway construction zones.
  • Be cautious of pedestrians, bicyclists, and motorcyclists, who are harder to see at night.

Sun Glare

  • To manage sun glare, keep your windshield clean, wear polarized sunglasses, and maintain space between vehicles.


  • A skid occurs when one or more tires lose traction, making it difficult to control the vehicle.
  • Slippery surface skids can occur on icy or snowy roads, especially when driving too fast or downhill.

Learn how to drive safely in low-visibility conditions like fog and smoke. Get tips on when to postpone your trip, how to adjust your driving, and what precautions to take to ensure your safety on the road.

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