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Question:

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

A approaching a stop sign or signal.
Explaination

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.