但是什麼是三點迴轉？？？？
參考美國的政府發行的駕駛手冊 ，不知道在哪裡，請翻第52頁，好人做到底，我直接引出來開頭第一步驟。
When turning a vehicle around, a motorist should start from the right edge of the road. Choose a safe spot with good visibility in both directions. If there is no other traffic, the motorist should signal left and move forward slowly while turning the steering wheel to the left. .....

要進行迴轉，駕駛一開始必須先停在右邊路肩，同時該地點必須有良好視野可以同時看清除兩個方向車流，當兩個方向都沒有車流，駕駛先打左轉燈，才可以慢慢開始轉動輪胎.....