Abstract: This paper presents an innovative design method for determining lateral clearance needs on a spiraled horizontal curve to satisfy sight distance requirements. The roadside lateral clearance is represented by a spiraled ...

Abstract: Turbo roundabouts, originating from the Netherlands, have been proven to have safety and operations benefits compared to traditional multilane roundabouts. Turbo roundabouts are gradually being adopted by North American ...

Abstract: Roundabouts are a superior solution to traffic operation issues at intersections with complex geometry, such as skewed and offset approaches where there are property constraints or where realigning approaches is costly. ...