Stop and get help

Zero visibility is a traffic emergency, not just bad weather

Multi-vehicle crashes can occur when drivers enter dense dust at highway speed or stop where following traffic cannot see them. If you can safely leave the roadway before visibility reaches zero, do it early. Never make a sudden blind lane change or stop in an active travel lane unless a collision or immediate hazard leaves no safer choice.

What to do as the dust wall approaches

  1. 01
    Reduce speed before you enter the dense dust

    Come off the accelerator smoothly, increase following distance, and avoid abrupt braking that can surprise traffic behind you.

  2. 02
    Look for a safe place completely off the roadway

    A rest area, exit, parking lot, or wide shoulder may be safer than continuing. Avoid stopping where the vehicle remains partly in a travel lane or where terrain hides you from approaching drivers.

  3. 03
    Once stopped, make the vehicle clearly stationary

    Set the parking brake and keep your foot off the brake pedal. Follow the current guidance from the state highway agency where you are driving regarding headlights and hazard flashers; some agencies advise turning exterior lights off when fully off the roadway so drivers do not follow your lights into the shoulder.

  4. 04
    Keep dust outside the cabin

    Close the windows and sunroof. Use recirculate if the vehicle's HVAC system and conditions allow, and avoid opening doors repeatedly while the dust is thick.

  5. 05
    Wait for usable visibility before re-entering traffic

    Do not pull back onto the highway just because the wind briefly changes. Make sure you can see approaching traffic, lane markings, and enough road ahead to accelerate safely.

Avoid the moves that create a second hazard

  • Do not try to outrun a large dust wall at highway speed.
  • Do not stop under an overpass or in a travel lane simply because visibility is poor.
  • Do not follow the taillights ahead as your only navigation reference; that vehicle may leave the road or stop suddenly.
  • Do not use high beams in dense dust because reflected light can make visibility worse.
  • Do not walk along the highway shoulder during near-zero visibility unless staying in the vehicle is more dangerous.
  • Do not assume cruise control or driver-assistance systems can see lane lines and traffic reliably through dense dust.

After the storm, the car may need a visibility check before normal speed

Dust can coat the windshield, headlights, taillights, cameras, radar covers, and parking sensors. Before returning to higher speeds, make sure you can see clearly and that the lighting and driver-assistance sensor areas you rely on are not buried in dust.

A heavily loaded engine air filter or cabin filter does not always need immediate replacement after one event, but a severe dust exposure can justify inspection according to the vehicle's maintenance guidance. Avoid blasting compressed air into filter media unless the manufacturer specifically allows that service method.

If the storm included blowing debris, inspect the windshield and tires when conditions are safe. A small puncture, sidewall cut, or glass chip matters more than a layer of cosmetic dust.