From Family Handyman · Alex Shoemaker · · 1m
When to Use Hazard Lights Correctly
Hazard lights warn of stopped vehicles but confuse drivers when on while moving.
In brief
Hazard lights warn of stopped vehicles but confuse drivers when on while moving. Hazard lights should only be used when a vehicle is disabled or in extreme weather with zero visibility, not while driving to avoid confusion. Originally reported by Family Handyman.
Hazard Light Laws Vary by State
Hazard lights rules differ by state, so drivers should check local guidelines before using them while driving.
“AAA notes that hazard-light laws vary by state, so drivers shouldn’t assume the same rules apply everywhere.”
When to Use Hazard Lights
Turn on hazard lights after a breakdown, flat tire, or crash if your vehicle must stay near traffic.
“After a breakdown, flat tire, or similar problem, the driver should move as far from traffic as safely possible and turn on the flashers.”
When Not to Use Hazard Lights
Hazard lights confuse drivers when on while moving; use headlights instead during heavy rain or poor visibility.
“Do not drive with your hazard lights on. Hazard lights are meant to signify that your vehicle is disabled.”
Extreme Weather Guidance
In dense fog with near-zero visibility, turn on hazard lights then pull into a safe location.
“In extremely dense fog where visibility is near zero, the best course of action is to first turn on your hazard lights, then simply pull into a safe location such as a parking lot of a local business and stop.”
Pre-Travel Weather Checks
Check local weather and road conditions before heading out to avoid dangerous travel.
“Check your local weather and traffic reports before heading out. If your roads are not in good shape, consider postponing non-essential travel.”
Why Hazard Lights Cause Confusion
Hazard lights reduce visibility and make it hard to see if drivers are braking.
“Hazard lights can actually reduce visibility making other drivers think you are stopped or stalled.”
Here's the gist
Hazard lights should only be used when a vehicle is disabled or in extreme weather with zero visibility, not while driving to avoid confusion.
