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。
* d! L0 {+ x% a- p  l7 `请问u-turn到底是不是合法的？
, j% }! O% D0 a4 G& A谢谢！

EightBelow

U-turns
( D/ V" R6 T7 q( _4 d7 T• Do not make a U-turn unless you can do it safely and without interfering
with other traffic.
2 s- J$ f8 O# {+ ^( |• Outside urban areas U-turns are not permitted on a curve or near the
3 x) N5 b1 F9 t  G: _crest of a hill where the driver of another vehicle cannot see your vehicle.
5 }  h: u+ q' N( cU-turns are not permitted in urban areas in the following situations:
9 F% H; @" ]' G& W) m- `• On a roadway between intersections.
" G1 h6 w! W! C5 n- P3 V0 _: i• Where a sign prohibits making a U-turn.
& U8 u# `2 Q( J: G" j• At an intersection controlled by a traffic-control signal (traffic lights).
• At an alley intersection.

无语

有红绿灯的地方U-Turn是违规的。