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How does the traffic light detect a car when a car is at ared light how does it trigger the light to change.?
Wiki User
∙ 15y ago
Coils of wire are buried under the road's surface to detect the metal in the car. Next time you are riding in a car look and you can usually see the lines in the asphalt where cuts were made to bury the wires. The signal from the detector is sent to the computer that runs the lights so it knows there are cars waiting. Good question!
Wiki User
∙ 15y ago
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What are stop light sensor?
Stop light sensors are a loop of wire that is buried in the pavement and controls the traffic light. The sensors are able to detect the traffic that is waiting at the light.
How does the human eye detect the colors of a traffic light?
There's nothing really special here, it's simply the color of the light that enters our eyes is how we see the traffic light.
What does a fresh traffic light means?
A traffic light you seen change to green
Why do drivers in CA stop so far back at intersections with traffic lights?
Because they're too stupid to realize they have to trip the trigger on the street to change the light
How long is it for a traffic light to change?
It takes 2-3 minutes for a traffic light to change from green to red! (P.S I have counted the seconds myself!)
What is the function of light detector circuit?
a: its function is to detect a change of light withing its perimeter
How did the traffic light change the world since 1920?
It did change the wrold alot because we didnt have traffic lights and there would be alot of accidents and when they invented the traffic light they could get around easier and it made it safer
Can you change lanes under a traffic light?
"Under a traffic light" implies that it is at an intersection. You are not allowed to change lanes while passing trhough an intersection, you must maintain the lane you are travelling in.
Why Do you see objects when light from them is reflected into your eyes?
Our eyes are specifically designed to detect light. The objects reflecting the light change the property of light, including its intensity and color; this allows us to make conclusions about the objects it was reflected from.Our eyes are specifically designed to detect light. The objects reflecting the light change the property of light, including its intensity and color; this allows us to make conclusions about the objects it was reflected from.Our eyes are specifically designed to detect light. The objects reflecting the light change the property of light, including its intensity and color; this allows us to make conclusions about the objects it was reflected from.Our eyes are specifically designed to detect light. The objects reflecting the light change the property of light, including its intensity and color; this allows us to make conclusions about the objects it was reflected from.
Is it acceptable to wait on the railroad track for a traffic light to change?
False
What are the blue lights on traffic lights in Florida?
They are "Confirmation Lights" which are the WHITE or BLUE light located directly above a Traffic Signal and are utilised by the Police to detect "Red Light Runners".It is "lit" when the lights are on Red.This allows the Police to see if anyone has run the red light.
What is A green traffic light that a driver observes change from red to green is referred to as?
Fresh green light
