当然不是了。请看:+ {" B; F/ q6 h9 N% \$ l# [0 d
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U-turns ) B3 R$ X' V2 I ; B+ o) Z. G/ @9 T; M; n B9 RDo not make a U-turn unless you can do it safely and without interfering with other traffic. $ |9 j ?. @* |+ ?- ?
Outside urban areas U-turns are not permitted on a curve or near the crest of a hill where the driver of another vehicle cannot see your vehicle. ! d1 {1 c- r1 @# H2 y1 l* ?- @
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U-turns are not permitted in urban areas in the following situations:1 {7 Q' a6 s7 x! X0 p! ^
On a roadway between intersections. ' U/ K% j* x$ Y; d5 ^
Where a sign prohibits making a U-turn. $ k i1 m& E6 s/ c: f6 q) }9 X% nAt an intersection controlled by a traffic-control signal (traffic lights). 4 W3 o$ P$ b' \: [+ d
At an alley intersection. ; Q0 c$ D# [" L) Y0 o( g5 E$ u- ^! ^2 ]7 F# G. v
摘自 Alberta Basic Driver's Handbook