hazard lights

plural noun

: special lights on a vehicle that flash on and off and are used to warn other drivers (as when the vehicle is not working properly)
Turn on your hazard lights. Wait inside the car for your tow …Adam Kleiner

called also hazards

Examples of hazard lights in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
In cases of near-zero visibility due to dense fog, activate your hazard lights and seek a safe spot, like a nearby business parking lot, to pull over and stop. Nc Weather Bot, Charlotte Observer, 6 Jan. 2026 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. Kansas City Star Weather Bot, Kansas City Star, 6 Jan. 2026 Under the new law, drivers must slow down or change lanes when approaching any highway maintenance vehicle or stopped vehicle that has flashing hazard lights or warning devices, such as cones or road flares. Sacbee.com, 4 Jan. 2026 Zero visibility protocol: 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. Bay Area Weather Report, Mercury News, 30 Dec. 2025 See All Example Sentences for hazard lights

Word History

First Known Use

1966, in the meaning defined above

Time Traveler
The first known use of hazard lights was in 1966

Browse Nearby Words

Cite this Entry

“Hazard lights.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hazard%20lights. Accessed 9 Jan. 2026.

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!