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。
4 Z! S8 b$ N) h/ Y% e- {请问u-turn到底是不是合法的？
% `5 x) `' o3 `+ J; [! v+ n谢谢！

EightBelow

U-turns
* X& P5 p2 {6 H' p3 h5 \• Do not make a U-turn unless you can do it safely and without interfering
* d% S' x$ C) {! s$ Dwith other traffic.
- S) w- F( y; \• 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.
( _) G, l& C9 E- S8 ]2 t. CU-turns are not permitted in urban areas in the following situations:
4 u: u) O) S4 X7 D) G• On a roadway between intersections.
• Where a sign prohibits making a U-turn.
• 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。