signal light
Colored driving cue
A signal light is a light used to communicate or direct—especially a traffic light controlling vehicles, or lights on a vehicle indicating turns and stops.
Ships and aircraft use signal lights for visual communication.
The term emphasizes the light's function as a signal rather than for illumination: Wait for the signal light to change.
- stoplightIntersection flow controller
- flareSudden bright burst
- semaphoreFlag-based signaling system
- morse codeDot-dash alphabet system
- blinkerVehicle directional signal
beacon · lighthouse · lantern · taillight · railroad · railway crossing · indicator · torch · crossing · brake · navigation · red · flashing · turn · high beam · tower · green · caution
- lightinglamp, lamps, bulbs, bulb, lightbulb
- Lightslamp, lightbulb, bulb, desk lamp, LED bulb
- signalswaved, nodded, gestured, blinked, flashed
- streetscapestreet lamp, street trees, streetlight, street furniture, planters
- maritime lightslighthouse, beacon, navigation lights, harbor lights, lightship
- rail safetytrain stop, crossing arms, safety gates, railroad crossing, train control
function/purpose
signal lightstreet lamp
Roadside illumination fixture
streetlight · ambient light · floodlight · decorative light · lamp post
light, sign, signal, signature, illuminate, signals, signify, signaling, signaled