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red light is used in traffic lights because red light has a "longer wavelength" than other colours

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12y ago

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Why rad light used in traffic light?

To humans RED means stop or danger in our brains.


How is a flashing red traffic light treated the same as a regular red traffic light?

A flashing red traffic light is treated the same as a regular red traffic light because it indicates that drivers must come to a complete stop before proceeding.


What a red traffic light is an example of?

A red traffic light is an example of a regulatory signal that indicates to drivers to stop their vehicle. It is used to control the flow of traffic at intersections to prevent accidents and ensure safe and efficient movement of vehicles.


Why do you use red light in traffic signals?

red was used to signify risk from not obeying - red being the color of BLOOD!!!!


How long is red light traffic?

There is no specific length of time for a red light. Traffic engineers make that determination according to the flow of traffic.


Why only red light is used to stop traffic?

because if we don't have a red light their would be people dieing or having car accidents


What possition is red on a traffic light?

Red is the top position on a traffic light. It signifies that vehicles must stop.


What must you do when you encounter a flashing red while driving?

A flashing red traffic light is used the same way as a stop sign. You treat a flashing red traffic light the same way you do as a stop sign. If the traffic light is "blacked-out", it's to be treated as an all-way stop. What I do when I come up to a flashing red traffic light, I look at the cross-traffic signals to see if they're also flashing red, or if they're flashing yellow to see if they stop or if they don't stop.


What position is the red light on a traffic light?

The red light on a traffic light is typically located at the top. The sequence of lights from top to bottom is red, yellow, green.


Which traffic light phase follows red?

Green, followed by yellow, followed by red.


What doses a red traffic light mean What does a flashing red traffic light mean?

A red traffic light means stop, and you must come to a complete stop before the intersection or crosswalk. A flashing red traffic light indicates the same as a regular red light – you must come to a complete stop, but you can proceed when the way is clear after yielding to other vehicles and pedestrians.


At a red traffic light, must you stop before proceeding?

Yes, at a red traffic light, you must stop before proceeding.