当然不是了。请看: $ t) m4 v% }: y- A$ | d2 E" n. L- e( ]/ `' m8 ]* Q' C7 M6 {0 ^/ r
U-turns. d- c, f2 c" @! y3 r" G; ] _
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Do not make a U-turn unless you can do it safely and without interfering with other traffic. . z7 M2 f' m& x# w+ P
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. 6 J( q+ u' d: b8 H# q$ _
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U-turns are not permitted in urban areas in the following situations:3 z1 n- _7 w: s4 t3 L% _
On a roadway between intersections. 7 y6 O3 O7 \8 l; I5 l0 n2 F, H
Where a sign prohibits making a U-turn. 6 ~2 g& L; v. PAt an intersection controlled by a traffic-control signal (traffic lights). ) I/ v3 f& t$ G: l( aAt an alley intersection. 4 a% Z2 V0 }$ m7 w# {
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摘自 Alberta Basic Driver's Handbook