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。
请问u-turn到底是不是合法的？
谢谢！

EightBelow

U-turns
! A% v' D9 k; }, q, N& Q0 G+ n: |• Do not make a U-turn unless you can do it safely and without interfering
/ A! f8 Q! Q: R  `% ?4 a4 ~+ ^! B" Nwith 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.
  a$ k: L$ @+ g  `! f1 u1 d) |( [U-turns are not permitted in urban areas in the following situations:
• On a roadway between intersections.
• Where a sign prohibits making a U-turn.
2 O. T& ^2 i0 R6 c0 @• At an intersection controlled by a traffic-control signal (traffic lights).
& [& c% q, h4 b& ]% q7 B• At an alley intersection.

无语

有红绿灯的地方U-Turn是违规的。