Traffic light is everywhere in our daily life. Every day you drive your car to commute, you will find out a traffic light on street. It is so familiar in our life, so that everyone think they have know everything about a traffic light.However, if someone was asked the question how big is a traffic light, most people will lost their words. Actually, it is not hard to answer how big is a traffic light.
Before we find out the answer to the question how big is traffic light, we have already known what is a traffic light. Traffic lights, also known as traffic signals, traffic lamps, traffic semaphore, signal lights, stop lights, and traffic control signals, are signaling devices positioned at road intersections to control conflicting flows of traffic.
When it comes to the question how big is a traffic light, the answer is always relevant to numbers. The standard nominal diameters are 8 inches and 12 inches. The authority on traffic lights and on traffic control devices is the Manual on Uniform Traffic Control Devices published by the Department of Transportation. So far we have answered the question how big is a traffic light.
It is always interesting to notice some daily detail in our life. When we ask the question how big is a traffic light, actually we are reviewing our life in a different perspective. Those minors in our life might have more important meaning than we expected. There are so many questions about our daily life that haven’t occurred in our mind. Maybe we should pay more attention to our life, and see what we can get from thinking and asking these question. People will be surprised how many new details we will find in our life.