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。
- N9 B4 Z( x2 X) @  e请问u-turn到底是不是合法的？
  e, p$ B9 k8 y谢谢！

EightBelow

U-turns
/ X+ Q  a' Y6 i$ H9 E# _5 y8 v• Do not make a U-turn unless you can do it safely and without interfering
# ]0 g0 D/ ^, @" `" Ywith other traffic.
) f4 {8 H4 z5 C• Outside urban areas U-turns are not permitted on a curve or near the
' s- ?' ]) q; w  I0 ?: \2 Lcrest 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:
• On a roadway between intersections.
) }8 A. G2 B3 Y6 f6 u  [. v$ j, D• Where a sign prohibits making a U-turn.
, P8 f7 R! G( j: K• At an intersection controlled by a traffic-control signal (traffic lights).
! m8 L& c  @5 ^8 Q6 u• At an alley intersection.

无语

有红绿灯的地方U-Turn是违规的。