warning beacon
Flashing hazard light
A warning beacon is a light or signal designed to alert people to danger or hazard.
Lighthouses serve as warning beacons to ships approaching rocky coastlines.
Flashing lights on emergency vehicles, construction sites, and airport runways all function as warning beacons.
The term extends to any conspicuous signal—visual or otherwise—that communicates caution: The economic indicators served as a warning beacon for investors.
- flashingRepeated brief illumination
- hazard lightVehicle's emergency warning blinker
- sirenWailing alert device
- air raid sirenWarning horn for bombings
- light towerMobile elevated illumination unit
alert · signal · signal fire · strobe · hazard · emergency · flare · buoy · tower · danger · red · red alert · rotating · alarm · caution · navigation · blinking · rescue
- signal lightsnavigation light, signal lamp, strobe, flashing light, signal light
- alertsalarm, alert, notification, push notifications, email alerts
- towerstower, bell tower, radio tower, water tower, cell tower
warning beacongreen light
Authorization to proceed
harbor light · guiding light · homing beacon · invitation · welcome sign
warning beaconcamouflage
Concealment through visual blending
concealment · hidden danger · blackout · dark zone · darkness