When it is obvious that you are going to turn, you:

You must use proper turn signals every time you turn or change lanes, even if you think your intentions are obvious. Signals are always important, even if no one else seems to be around to see them. There may be other vehicles nearby that you can't see or haven't yet noticed.

• Do not need to use a turn signal.
• Should still use a turn signal.
• Only need to use a turn signal if there are nearby pedestrians.
• Only need to use a turn signal if you are at a stop light.