UPN: 8956    Project Number: NH 1-1(10)0    Project Name: JCT S-508 – East & West

Centerline Rumble Strips (CLRS) image

This project is a longitudinal joint performance evaluation comparing a centerline rumble strip section and a section without centerline rumble strips. Prior to construction in 2016, the average daily traffic was 1,539.

A center line rumble strip is a longitudinal safety feature installed at or near the center line of a paved roadway. On this project the strip is a series of rectangular milled indents intended to alert distracted drivers, through vibration and sound, that their vehicles have left the travel lane.

Asphalt pavements are typically constructed with a longitudinal joint (or meet line) along the center of the road. Degradation over time may allow the entry of water, leading to early pavement deterioration. Rumble strips provide another potential reservoir to hold water and could accelerate this joint deterioration. Traffic and environmental characteristics may also affect joint performance.

Construction Report
Final Report

For more information, contact MDT Research Section.