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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 {* K# g2 _* N3 ~6 @
* Anywhere a sign prohibits a U-Turn,0 W* U6 ~3 d' Y+ ]; B
* In urban areas between intersections,3 A1 ]! u2 n! ?$ A Y- h9 {* i* F
* At alleys and driveways,! ]1 O' m. z% e9 S$ f
* At an intersection controlled by a traffic signal (unless signage or signals specifically allow this maneuver),
# g8 k2 `+ o( u5 |5 v: [ * 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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