Three-point turns are used when a road is not wide enough to do a
U-turn.
However, because it takes longer to do a three-point turn, in heavy traffic or on
busy roads it is often safer to turn around by driving around the block instead.
Before commencing a three-point or U-turn, signal, check mirrors and blind spots.
After completing the turn, signal and check mirrors and blind spots, before
rejoining the traffic.作者: 外面的风 时间: 6-1-2013 13:25
You must not begin your U-turn unless you can make the turn without
unreasonably obstructing traffic. Give way to all vehicles and pedestrians and signal
before you start to turn.