U-turn

A U-turn in driving refers to performing a 180° rotation to reverse the direction of travel.

Examples of jurisdictions with codified U-turn prohibitions include the Canadian provinces of Alberta and British Columbia and the U.S. states of Colorado[2] [3] and Oregon.

Alberta Regulation 304/2002, Division 7): Other provinces and territories that prohibit U-turns at traffic signals include Yukon,[5] British Columbia[6] and Saskatchewan.

[7] In Taiwan, Article 49 of the Act Governing the Punishment of Violation of Road traffic Regulations (zh:道路交通管理處罰條例) administratively fines a motorist 600 to 1800 new Taiwan dollars for any of the following unlawful U-turn: In addition, a Taiwanese driver license is demerited one point for an unlawful U-turn pursuant to Article 63 of the same Act unless the license has been suspended or revoked.

Furthermore, the same Act makes a U-turn on a railway level crossing a violation for drivers of motorized and non-motorized vehicles:

A diagram showing the path of a driver performing a U-turn on a normal two-way road (left-hand traffic)
Contrail of a plane that took a U-turn
A U-turn traffic light in Lake Buena Vista, Florida, United States.
Taiwanese No U-turn sign