Patent ID: 7625152
Filing Date: 2009-12-01
Classification: E01F

Abstract:
1. A roadway safety warning device for bonding to the highway pavement using an adhesive, comprising: a strip having a length and a width; the strip having an alternating series of first areas and second areas, the first areas having a first height, the second areas having a second height, the second height being different than the first height to give a longitudinally corrugated rumble-causing top surface; the first and second areas extending substantially across the width of the strip; the first and second areas alternating along substantially the length of the strip such that vibration and noise are caused in the vehicle whose tire rides over the “corrugated” rumble-causing longitudinal top surface of the strip; and the strip is positioned as a permanent rumbling line that warns drivers of vehicles involuntarily leaving the highway and is bonded to the pavement adjacent to the outer edge of the pavement as a continuous rumbling strip over the entire length or part of the highway.