Rumble Strips

graphic from Maine DOT Rumble Strips brochure

Project 21848.00 Rumble Strip Installation
CENTERLINE RUMBLE STRIP INSTALLATlON at the 45 mph sign North of Foster Hill Road to 40 mph sign South of Intervale & Bald Hill Road. Centerline rumble strips will be installed in areas that speeds are 45 MPH or over, shoulder widths that meet or exceed 4' in width and will allow for breaks at side roads and entrances.

Contract Award MDOT Project 21848.00

Map showing planned rumble strip installation in Gray Maine
Planned installation of rumble strips for Gray are described as: 

  • Gray to New Gloucester, Route 26 - 50 mph sign west of Game Farm Road to the island south of Sabbathday Road.
  • Gray to New Gloucester, Route 202 – 45 mph sign north of Foster Hill Road to the 40 mph sign south of Route 231 (Intervale Road).

Improving the Safety of Maine's Roads

On Maine’s rural roads, many crashes and MOST fatalities (70% of the total) result when a vehicle leaves its designated travel lane (going either left or right) and is involved in a Lane Departure crash. That crash may be further described either as a Went Off Road or a Head On type crash. Although far fewer Head On crashes occur compared to the number of Went Off Road crashes, the likelihood of a serious injury or a fatality in a Head On crash are very high. In Maine, during the past 10 years, there have been over 8,000 Head On crashes and those resulted in 355 fatalities and more than 1,100 serious injuries. In recent years, there has been an average of 33 Head On fatalities occurring annually. That number spiked up in 2014 to 46, but was back down to 30 in 2015.

Vehicles leave their proper lane due to a variety of driver contributing factors: speed, alcohol/drugs, distracted driving, fatigue/falling asleep, medical episodes… also wintry or wet roads contribute to some incidents.

Preventing deadly Head On crashes has been a continuing focus for MaineDOT. Center line rumble strips have been found to be the best mitigation to prevent these crashes. Rumble strips provide immediate feedback to the driver at that point of lane deviation and are intended to alert that driver to correct course. While smart cars are coming onto the market, and some new cars feature lane departure alert systems, it will still be a long time before all vehicles become interactive with the driver or self-correcting when things go wrong. Rumble Strips have been a proven way to alert erring drivers that they are leaving their lane – regardless of any available on-board vehicle technology.

Read more, including before/after rumble strip installation incident statistics and what is planned for 2017 and beyond in MaineDOT's brochure, Understanding Rumble Strips, or the publication Safety Performance on Maine’s Rumble Strip Corridors.