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MDOT study: Rumble strips reduce accident deaths by 50% | News

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MDOT study: Rumble strips reduce accident deaths by 50%
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GREENVILLE, Mich. (WZZM) -- New numbers show that a loud, startling warning for drivers to stay in their lane is dramatically improving safety on Michigan roads. A Michigan Department of Transportation study shows that where they're present, rumble strips have cut traffic fatalities and injuries in half.

Like thunder on the road, drivers have heard the noise and started paying attention.

"It gives you a little jolt to say, 'Hey, you're doing something wrong -- get back in your lane,'" said MDOT communications representative John Richard.

The latest numbers on rumble strips speak for themselves. A new, comprehensive study between MDOT and Wayne State University shows a dramatic drop in accidents, injuries, and fatalities on roads with rumble strips.

"They've proven to be very, very effective," says Richard. "In all areas where we've placed rumble strips, there's about a 50 percent reduction in crashes that resulted in injuries and fatalities, and that's a huge number."

MDOT says a similar but smaller study from 2008-2009 on M-57 near Greenville revealed the same positive results.

"This study shows each year rumble strips alone will save about sixteen lives," said Richard.

Center-line rumble strips are typically used on rural roads with speed limits of at least 55 miles per hour.

"This study will just solidify the effectiveness of rumble strips, so they'll be going up wherever we can put them," Richard said.

MDOT says it typically adds rumble strips when new roads are built or when existing roads are upgraded.

M-231 will be the newest road to have rumble strips.


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