有关u-turn

小胡同

最近查google map for directions, 经常会看到需要u-turn。印象之中好像在主路上不可以，不管是否有不可u-turn的牌子。平常也看到有人在红绿灯处做u-turn。
# u2 x5 @- t+ n, y/ I- f请问u-turn到底是不是合法的？
5 l+ q; L8 x+ [4 A谢谢！

EightBelow

U-turns
  _  \: q% {4 i" J• Do not make a U-turn unless you can do it safely and without interfering
with other traffic.
• 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.
U-turns are not permitted in urban areas in the following situations:
8 G. l6 V) ]; O2 O! y+ \6 E• On a roadway between intersections.
• Where a sign prohibits making a U-turn.
. M0 R0 \# N/ k2 M& W# t• At an intersection controlled by a traffic-control signal (traffic lights).
8 ]9 f' \! ^' ?8 x. J) C• At an alley intersection.

无语

有红绿灯的地方U-Turn是违规的。