單選題 · 選擇一個答案
You are in the left-hand lane at traffic signals. You are waiting to turn left. Which of these traffic signals may you move on?
你正在路口的最左邊車道等待信號燈放行左轉彎，下面哪一個信號燈亮起的時候你可以左轉？
B shows a green left arrow, permitting a safe left turn.
B顯示左轉綠箭頭，允許按箭頭方向安全左轉。
閱讀相關知識
A, C and D still have red left arrows. An arrow applies only to its direction; check the path and pedestrians.
A、C、D仍有左轉紅箭頭，不得左轉。綠箭頭只允許相應方向，仍須確認路線及行人安全。