Skip to Main Content

Start Of Main Content

Drive safely in dense fogs

It's never ideal to drive in dense fog. Here are tips for when you have to keep driving.

Dense fog on a highway

What Steps Can You Take to Drive Safely in Dense Fog?

Dense fog can create dangerous conditions on the road, especially if it’s extremely dense fog or combined with other severe weather conditions. The safest thing to do is pull over into a parking area until the fog clears.

If you must continue your trip, keep in mind these tips for driving in fog:

  • Minimize distractions. Silence your cell phone and the stereo. Put distractions like your cell phone in a place where you won’t be tempted to reach for them while driving, like the glove compartment.
  • Reduce your speed. Because you can't see the road or other vehicles, a low speed can help you react safely.
  • Roll down your window. This allows you to listen for cars and emergency vehicles.
  • Use roadside reflectors as a guide. The markings can help you navigate twists and turns.
  • Turn off cruise control. This will maximize your control of your vehicle.
  • Use windshield wipers and defrosters. Limits excess moisture on the window and reduce glare.
  • Drive with low beams and fog lights. High beams can worsen visibility because they reflect off the fog.
  • Use the right edge of the road as a guide. Helps you stay in your lane and not “drift” into the middle lane.
  • Increase your following distance from other cars to ensure you have the proper time to respond to any obstacles. A good rule of thumb is to increase your count distance by at least 5 seconds instead of the normal 2 seconds behind another vehicle.
  • Beware of animals on the road. Animals, especially white tail deer, feel bolder under cover of fog and are much harder to see. The lowered visibility in dense fog means less time for you to see them, and for them to see you.

If the fog gets too dense and you pull over to a safe area, keep these tips in mind:

  • Use your turn signal. Other drivers may be using your taillights as a guide, so alert them that you're pulling off the road. When you are traveling in low visibility areas, signal earlier than you normally would in ideal weather conditions.
  • Pull off away from the road. If drivers can't see the shoulder, they likely won't see your vehicle either.
  • Turn on your hazard lights. Help other drivers know you're stopped. Avoid using flashing lights while driving. In many states, hazard light use is not permitted while driving. Using the lights can make other drivers think you’re stopped or stalled. Also, hazard lights in operation disable your ability to use your turn indicators.
  • If you do have a collision, State Farm® is here to help. Learn more about the steps to take after a crash, including calling your agent.

    Get more tips for driving in fog and other severe weather conditions from State Farm.

The information in this article was obtained from various sources not associated with State Farm®. While we believe it to be reliable and accurate, we do not warrant the accuracy or reliability of the information. These suggestions are not a complete list of every loss control measure. The information is not intended to replace manuals or instructions provided by the manufacturer or the advice of a qualified professional. Nor is it intended to effect coverage under our policy. State Farm makes no guarantees of results from use of this information.

Select a product to start a quote.


Also Important

New Requirements for Rear Visibility Technology

New Requirements for Rear Visibility Technology

By 2018 most new vehicles will be required to come with this life-saving feature that can help prevent accidents.

Related Articles

Can You Drive Safely in Every Type of Severe Weather?

Can You Drive Safely in Every Type of Severe Weather?

It's helpful to know how to drive competently in every kind of bad weather.

Does Your Car Have This Icy Road Safety Feature?

Does Your Car Have This Icy Road Safety Feature?

When cars slip on frozen roads in winter, many drivers get a little help from ESC.

Put the Brakes on Aggressive Holiday Driving

Put the Brakes on Aggressive Holiday Driving

With the holidays come busier roads, stress, and other dangerous driving conditions.