From Wazeopedia
{{@|Preventing median U-turns}}
==== {{@|Preventing median U-turns}} ====
A large U-turns via turn penalty is applied for a median segment are heavily [[Routing penalties|penalized]] double left/right turn when '''''all three ''''' of the conditions below are met. This prevents U-turns at box- (#) and H-style intersections on divided highways and parallel roads.:
# The forbidden U-turn is composed of one an incoming segment, one a single median segment, and one an outgoing segment.# The length of the median segment is shorter than 15 m (49 .21 feet).# The portion of those two incoming and outgoing segments closest to the median segment must be are [[#Checking for parallel segments|within ±5° of exactly parallel]].to each other
==== {{@|Allowing median U-turns}} ====