Signaling

Recognition signals
- human and technical communications
- concept of information
- signal
— discrete part of a communication
— unidirectional and bi-directional

Distress signal

Smoke signal

Telegraphic signal

Telecommunication signalling

Code of Signals

Maritime signal flags
Maritime flag signalling

Military signals

- military communications
- Naval flag signalling

Signs

Traffic light
Railway signal
Beacon

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