American Association of Geographers (AAG) Annual Meeting
In 2008 Michigan Department Transportation began a project to mill 5,700
miles of center line rumble strips on selected Michigan Trunk lines at a total cost of approximately $8 million. The purpose of the study was to assess the impact of center line rumble strips on the number of head on and sideswipe collisions in the state of Michigan. The data for this study were obtained from Michigan Traffic Crash Facts and Michigan Department Transportation for 2004 through 2009. The results indicate a significant decrease in head on and sideswipe collisions after installation of center line rumble strips.