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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,
' b+ {: \: n4 s. Z6 Q * Anywhere a sign prohibits a U-Turn,
5 B# h. n5 c$ m4 m3 ] * In urban areas between intersections,* k5 T3 z/ a" p5 j+ V) K! E
* At alleys and driveways,
* i4 L( g, J: P N# ^* F * At an intersection controlled by a traffic signal (unless signage or signals specifically allow this maneuver),
0 r5 T9 y$ |% Y% w4 A' a! H * 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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