当然不是了。请看:7 h( ?) {7 d( \; q. p A- e
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U-turns ! D9 b M1 }$ r! G; p" e" R ) q2 R6 U1 r0 Y0 {Do not make a U-turn unless you can do it safely and without interfering with other traffic. - k6 v" o! p4 z! C/ Z! n
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. 1 |# d0 _: T3 K! C/ r" U0 G7 @% c7 C3 F( Z. A
U-turns are not permitted in urban areas in the following situations:' C8 E8 C0 l; N3 O
On a roadway between intersections. & @! f& r* |4 o5 F8 H
Where a sign prohibits making a U-turn. 6 Y& x: H' n/ U3 j
At an intersection controlled by a traffic-control signal (traffic lights). 2 d1 `. m* B7 R0 G( [6 aAt an alley intersection. : z1 S% I" N. o
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摘自 Alberta Basic Driver's Handbook