Related Clues:
- Use the turn indicator
- Watchful and ready
- Primed for action
- Communication by sign
- Watchful, sharp
- Gesture, light or sound which sends a message
- Watchful and bright
- Vigilant, watchful
- Indication or warning
- Watchful, quick-thinking
- Give notice to
- Communication that encodes a message
- Sign that conveys a message
- Gesture to communicate
- Awake and watchful