From Wazeopedia
{{@|Median U-turn penalty}}
{{Mbox|type=important|text=It is possible for this method to fail to prevent a U-turn when it is the first segment of a route or reroute. If you observe this method to fail when it is implemented properly, please report it in [ this forum thread]}}
[[File:MinSegLengthUturn2U-turn_Roads.png|border|390px350px|right|Segment too short to allow two left turns]]
The Waze routing algorithm assesses a [[Routing penalties#Road_configurations|penalty]] for a double-left or -right turn, which can be used to prevent U-turns at box- (#) and H-style intersections on divided highways and parallel roads.