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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 {" V' R1 h2 d- z5 r * Anywhere a sign prohibits a U-Turn,9 g6 T7 C% y" ]) [4 e7 R% {) w' D$ n) N# H
* In urban areas between intersections,) n: m* z" k+ v7 \, P! j1 g
* At alleys and driveways,, X; r! |' x( f; F8 Q1 Z
* At an intersection controlled by a traffic signal (unless signage or signals specifically allow this maneuver),8 |% ~$ r* Z" b9 ~
* 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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