How do stoplights work? A timer? Motion Sensor? - how stoplights work
There are several methods. The most common reason is a "circuit cut" in the same way, and if a vehicle is more than "Loop") is an electric system (magnetic disturbance takes place, so no sign of recognition. In addition, the fires of May or enter on a timer for each address, a certain amount of time. There are also devices like the arms of the camera mast itself can see the traffic and determine the direction it needs a green-red signal. Worse, if an emergency vehicle to cross an intersection, there are devices called Opticom in the arm of the pole, change the type almost immediately at the crossing on the emergency vehicle, a green light.
I'm no expert, but working with the electricians of the local community, and that's what I learned over the years.
How Stoplights Work How Do Stoplights Work? A Timer? Motion Sensor?
2 comments:
Today, the majority of day is to have a sensor on the street, directly on the solid white line that you need to put behind them, you can see where you stand in the way, there is a sketch of the place where "closed "I think .... I think it is a weight sensor that can move, as some vehicles such as motorcylcles can be difficult to measure weight.
Both.
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