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U-turns are often prohibited for various reasons. Sometimes a sign indicates the legality of U-turns. However, traffic regulations in many jurisdictions specifically prohibit certain types of U-turns. Laws vary by jurisdiction as to when a U-Turn may or may not be legal. Examples of jurisdictions with codified U-turn prohibitions include the Provinces of Alberta and British Columbia and the State of Illinois.[1] In Alberta, U-Turns are prohibited in certain circumstances, for example (ref. Alberta Regulation 304/2002, Division 7):
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* At the crest of a hill or on a curve unless the driver can see at least 150 m ahead,+ ~7 |' B9 X# B. k- |
* Anywhere a sign prohibits a U-Turn,
L4 {5 `! a) \8 z * In urban areas between intersections,& [, ~$ T7 Y0 {' V$ i
* At alleys and driveways,
2 o8 `: P4 I3 |) j * At an intersection controlled by a traffic signal (unless signage or signals specifically allow this maneuver),6 e: z$ {" \* |& l
* By a school bus on an undivided highway or on a divided highway where the length of the bus is longer than the width of the median between the two carriageways. |
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