Rumble strips alert drowsy or inattentive drivers through vibration and sound that they are

Explanation

Rumble strips are a series of indented elements installed on a paved roadway shoulder near the travel lane, on a two-lane roadway near the center line, or in a lane of traffic approaching a stop sign or signal. Rumble strips are intended to alert drowsy or inattentive drivers through vibration and sound that their vehicles have left the travel lane or are approaching a stop sign or signal.