Study: Flashing LED lights can reduce crashes on curves

Talking Michigan Transportation

Talking Michigan Transportation
Study: Flashing LED lights can reduce crashes on curves
Dec 04, 2025 Season 7 Episode 248

On this week’s edition of the Talking Michigan Transportation podcast, a conversation about a new study that confirms that flashing LED lights, used strategically, can improve safety on curves.

The study is part of a larger project looking for effective speed warning technologies, said Timothy Gates, a professor of civil and environmental engineering at Michigan State University, who talked about the findings on the podcast. 

The research is funded by the Michigan Department of Transportation (MDOT).

The state tallied 128,517 crashes on curved roadways during winter weather conditions between 2018 and 2022, causing 175 serious injuries and fatalities, plus 1,360 less serious and suspected injuries, the study said. 

The study concluded that curves on flat roads (called horizontal curves by highway engineers) "present a major challenge to drivers, especially when there is a significant difference between the posted speed limit and the curve advisory speed."

Episode Artwork Study: Flashing LED lights can reduce crashes on curves 20:11 Episode Artwork Projects improve travel near Grand Rapids, Traverse City 21:43 Episode Artwork MDOT, communities celebrate conclusion of big projects 32:05 Episode Artwork Michigan budget provides a boost to public transportation 28:51 Episode Artwork Why MDOT is solidifying policies for use of facilities 23:49 Episode Artwork New transportation hub a big step for travelers in Detroit 27:18 Episode Artwork Michigan budget has good news for studying road usage charges 28:15 Episode Artwork Reprise: What 2024 polling said about removing sales tax from fuel 26:44 Episode Artwork Federal help for studying and reducing wildlife crashes 20:57 Episode Artwork Increased enforcement targets trucks in work zones 28:06 Episode Artwork One more time: Texts about unpaid tolls are scams! 26:13 Episode Artwork Panel of experts sheds light on transportation funding battle 29:52 Episode Artwork As road funding talks continue, a look at pavement forecasts 19:17 Episode Artwork Building roads and bridges generates jobs 28:51 Episode Artwork The week for electric vehicle news 27:09 Episode Artwork Are we talking enough about crumbling bridges? 24:07 Episode Artwork Michigan DNR works to provide access for all to popular state park beach 16:11 Episode Artwork How safety cameras slow down drivers in school zones 22:15 Episode Artwork Drive on the roads, pay for the roads 27:54 Episode Artwork After a series of work-zone crashes, what can be done? 18:52 Episode Artwork Reprise: A veteran Michigan pollster talks about perceptions of road conditions and repairs 31:19 Episode Artwork Take 2: Regulating traffic flow with stop lights at entrance ramps 27:35 Episode Artwork Why do we need a green light to enter a freeway? 29:19 Episode Artwork EVs, magnets and drones. Oh, my! 24:31 Episode Artwork Dr. Fraud: Do NOT respond to texts about unpaid tolls 24:55