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Researchers examine a rumble strip

Minnesota: Are You Ready to Mumble?

Rumble strips keep people safe, but the noise they produce can sometimes be a nuisance for residents. A new report finds that sinusoidal rumble strip designs — a.k.a. "mumble strips" — provide the same safety benefits to drivers while producing less external noise.

California’s standard rumble strip design outperformed Minnesota’s and Pennsylvania’s in a comparison study along a rural highway near Crookston, Minnesota.  (read more)
(Posted 3/16/2015)

More News

MnDOT Tests Crowdsourcing to Improve Road Condition Reporting

The Minnesota Department of Transportation is testing a crowdsourcing application that will allow motorists to update winter weather road conditions on the state’s 511 system. (read more)
(Posted 3/9/2015)

MnDOT Plow Drivers Invent New, Hybrid Plow Design

Snow plow operators in southwestern Minnesota have invented an experimental plow that uses the wind to cast snow from the road without impeding traffic or the operator’s view. (read more)
(Posted 2/25/2015)

Making SMART Signals Even Smarter

MnDOT-funded research has helped develop the SMART Signal system, which not only collects traffic and signal-phase data automatically, but also identifies under-performing traffic signals and generates optimal signal timing plans with minimal human intervention. (read more)
(Posted 2/23/2015)

Study Shows Drivers Are Spending Less Time Traveling

In a new series of research reports sponsored by MnDOT and the Metropolitan Council, University of Minnesota researchers are delving into a set of rich data encompassing more than four decades of travel behavior surveys to enable the region’s transportation planners to better understand how its residents make decisions about whether, when, where, and why to travel. (read more)
(Posted 2/13/2015)