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Road having curved grooves

  • US 4,764,051 A
  • Filed: 07/20/1987
  • Issued: 08/16/1988
  • Est. Priority Date: 07/20/1987
  • Status: Expired due to Term
First Claim
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1. A road rumble strip construction including a road having a shoulder below an edge of the road, a plurality of grooves each of which intersects said road edge and each of which has portions which extend into the road surface, each of said grooves being arcuate in plan view of said road, each of said grooves being of continuously varying depth along its length, the deepest portion of each groove being located at an endge of the road, said grooves being parallel to each other and being at an angle to the longitudinal axis of the road, the end of each groove opposite its deepest portion terminating at and being coplanar with the surface of the road, the grooves being formed from the road and being integral with the road, the extent of the grooves at each edge of the road, relative to the road width, being less than one half of the width of the road.

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