Superstreet

For the air combat maneuver also known as the "J-turn", see Herbst maneuver. For the driving maneuver also known as the "J-turn", see J-turn. For the "SuperStreet" race format, see Supercars Championship § SuperStreet.
This article reflects countries that drive on the right. For countries that drive on the left, reverse right and left.
At a superstreet, crossroad traffic intersecting with a main thoroughfare is restricted from any direct crossing or left turns. Traffic may only turn right, merging onto the main road, which then provides U-turn lane access and allows for left (or right) turns onto the intersecting crossroad. The opposite applies for countries that drive on the left.

A superstreet[a] is a type of road intersection that is a variation of the Michigan left. In this configuration, in contrast to the Michigan left, traffic on the minor road is not permitted to proceed straight across the major road or highway. Drivers on the minor road wishing to turn left or go straight must turn right onto the major road, then, a short distance away, queue (wait) into a designated U-turn (or crossover) lane in the median. When traffic clears, they complete the U-turn and then either go straight or make a right turn when they intersect the other half of the minor road.

The superstreet typically requires four traffic light-controlled intersections, and most traffic must pass through two of them, but each light has only two phases, greatly increasing average traffic flow; there is no need for numerous left-turn phases where most traffic is waiting for only a few cars to clear the intersection. Turning movements on roads with lower cross-traffic volumes may be controlled with stop or yield signs for turning traffic rather than with signals.

  1. ^ Staff (October 2009). "Techbrief: Restricted Crossing U-Turn Intersection (FHWA-HRT-09-059)". Alternative Intersections/Interchanges: Information Report (AIIR) (FHWA-HRT-09-060). Federal Highway Administration. Retrieved August 24, 2012.
  2. ^ Minnesota Department of Transportation, Reduced Conflict Intersections, accessed November 2014


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