当然不是了。请看:/ U X; N7 K6 k
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U-turns& t& V% U( v1 O0 j' c3 \
& u# T& M" t0 SDo not make a U-turn unless you can do it safely and without interfering with other traffic. # s0 L" \% X3 y% z; b! f1 l8 B
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. % B, m" @# u9 L; I* z# K" X+ [5 d3 k- }+ b- `' \& w
U-turns are not permitted in urban areas in the following situations:' h# E8 i" x2 O5 K2 G" c3 j9 ?
On a roadway between intersections. 1 G1 a6 _4 j3 l* b S jWhere a sign prohibits making a U-turn. 2 @" g1 a9 N6 O, C( \" K8 kAt an intersection controlled by a traffic-control signal (traffic lights). / \$ P! d( @% F: w+ C- Y/ IAt an alley intersection. $ d) S# W2 c/ R, Z4 M
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摘自 Alberta Basic Driver's Handbook