Practice question
What is 'power-line communication' (PLC) in smart roadway lighting?
- Communication using telephone lines
- A technology that uses existing electrical power wiring to carry digital control signals to luminaires, eliminating the need for separate control wiring
- Communication using carrier pigeons
- A direct phone line to the power company
Answer: B — A technology that uses existing electrical power wiring to carry digital control signals to luminaires, eliminating the need for separate control wiring
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