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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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% U) W+ R2 G, D& ~ * At the crest of a hill or on a curve unless the driver can see at least 150 m ahead,* w* e% j+ n" V) a4 l
* Anywhere a sign prohibits a U-Turn,$ V, y( b# y- M
* In urban areas between intersections,
4 g! G! m; Z5 J" Y * At alleys and driveways,6 w3 u7 G! s/ h, R1 B
* At an intersection controlled by a traffic signal (unless signage or signals specifically allow this maneuver),) r& }4 I/ E, [& j3 c. q1 |- Y! n9 Y
* 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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