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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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* g. z/ _0 @5 W" H3 p; B * At the crest of a hill or on a curve unless the driver can see at least 150 m ahead,
2 R0 Q/ b& t X$ m" S, P * Anywhere a sign prohibits a U-Turn,
" |3 H+ X9 S: Q5 Z0 I * In urban areas between intersections,
% z B! J/ Q; I4 _* }; N * At alleys and driveways,
- `( v2 b$ ^1 ^( A* R$ L: Y, o, t * At an intersection controlled by a traffic signal (unless signage or signals specifically allow this maneuver),, |+ t# ~% L9 ?! S8 n4 \
* 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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