Highway designers install rumble strips along the shoulders or centerlines of high-speed roads as a tactile and audible warning system. When a vehicle tire passes over the milled corrugations, it generates severe vibration and a loud humming noise in the cabin. They are a proven countermeasure against run-off-road collisions and lane departure crashes caused by driver fatigue.
Heard on the job
The new spec requires us to mill a continuous rumble strip along the entire right shoulder.
Also heard as
- sleeper lines
- alert strips