Related Clues:

• Warning notice
• See 35 Down
• Striking
• Noteworthy
• It hangs out on a street near you
• Like many a rescue
• Cell user's need
• Prepare to turn
• Wink, e.g.
• Use a blinker
• Use the turn indicator
• Communication by sign
• Gesture, light or sound which sends a message
• Indication or warning
• Communication that encodes a message