Rumble strips save lives, they provide a tactile and a verbal warning to drivers. However, the noise that is generated from a rumble strip is irritating to local residents, and because of this noise MnDOT has been requested to remove them. As well as County Engineers, see TZD Conference 2009 Presentation Victor Lund for example. This research would explore development of a quieter rumble strip and still provide the tactile warning of a rumble strip.
It would document some of the research which has been performed in the past on developing such a rumble strip, and would be focused on overcoming the challenges of using them.