Traffic lights are signalling devices most commonly positioned on roads, junction intersections and pedestrian crossings to control the flow of traffic. They are also found in many other various areas of our life, on buildings, bridges, train stations, even in supermarkets!
They are installed globally and are instantly recognisable by always using the three standard colours of red, amber and green.
Here we will look at the three most common traffic lights used on our roads:
Red/Amber/Green Traffic Lights.
These lights are the most commonly found as we see them daily on the roads we use to help ease the flow of traffic. The red light means ‘stop’ the amber light means ‘caution’ and the green light means ‘go’. They assign the right of way for the road user and help to ensure our busy roads run as smoothly as possible.
Walking Man Traffic Lights.
These are usually indicators for pedestrians; indication when it is safe to cross a road by lighting up with a green walking man, or not yet safe by lighting up with a standing red man. The same notion of colours is seen here, green for go, red to stop.
Wig-Wag Traffic Lights.
Wig-wag lights are commonly found in colours amber-amber or red-red and are generally used on level bridge crossings and other places where there is a need to stop ordinary traffic flow.
Without these simple yet very effective lights, our roads would be in utter chaos as every year the roads get busier and busier with more traffic flowing through them. The use of technology monitoring and maintaining the flow of traffic through lights are a necessity in our everyday life.
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