How do traffic lights time or decide when to display their colors (red/green/yellow)?

Question

How do traffic lights time or decide when to display their colors (red/green/yellow)?

In: Technology

Answer 1

Depends on how it’s programmed. Some lights go
Through a pre-programmed sequence no matter what. Other lights go through a sequence based on what cars it can sense in what lane. And then there’s lights that default to a particular configuration and only change if there’s a car sensed