Reverse curve

From Wikipedia, the free encyclopedia

A reverse curve is an area along a transportation corridor alignment (highway or railroad) that curves in one direction and is immediately followed by a curve in the opposite direction. In the United States, a reverse curve on a highway is often marked with a W1-4R sign (right-left reverse curve) or a W1-4L sign (left-right reverse curve), as called for in the Manual on Uniform Traffic Control Devices.