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。
- s* ?% m( B1 S1 t  @" s: f请问u-turn到底是不是合法的？
, ~* v! Y; Y. a3 w4 ^' \谢谢！

EightBelow

U-turns
9 W, {' T; F8 {! p5 l+ p: X, U• Do not make a U-turn unless you can do it safely and without interfering
$ Z0 M. ^7 y0 P: K; C( M# \with other traffic.
+ k1 `! \3 K& b# A) h• 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.
' Q. V6 {. ~* G  c) pU-turns are not permitted in urban areas in the following situations:
2 T8 x) W9 V1 d6 F• On a roadway between intersections.
! o, {6 N. l7 p- v3 a• Where a sign prohibits making a U-turn.
9 @! w1 C! x4 ?6 {; c! j6 a• At an intersection controlled by a traffic-control signal (traffic lights).
" W  c: G! l6 g! w  v& P• At an alley intersection.

无语

有红绿灯的地方U-Turn是违规的。