Traffic Control Devices Pooled Fund Study: Signing For Intersection Geometrics That Require U-Turns

Monday, January 10, 2022 - 15:45

Alternative intersection designs can improve traffic operations and safety but may be confusing to drivers due to turn prohibitions at intersections, such that drivers may be unaware where they can make a U-turn. Some alternative designs include median U-turns (MUT), restricted crossing U-turns (RCUT), J-turns, and through U-turns (ThrU). Each intersection type requires a driver to make a U-turn at a location downstream from the main intersection for minor, major, or both approaches. Transportation agencies have used a variety of signing approaches, with combinations of regulatory and guide signs, to address wayfinding through these intersections. The full TechBrief is available online from the US FHWA web site at


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