Related Clues:
- Intersection caution
- Sailor's guide
- 'Accident ahead' indicator
- Become wider
- Guiding tower
- Suddenly intensify, with "up"
- Burst of light
- Roadside alert
- Distress signal shot into the air
- Bell-bottoms feature
- Sign of danger
- ''Breakdown ahead'' warning
- ''Accident ahead'' indicator
- S O S signal
- Breakdown alert