How does traffic light signal work

Everyday single day, on your way to your work place, no matter you drive your own car or take a public transportation, you will meet a lot traffic lights which keep the whole city’s traffic under control. For people who live in the big cities, they are all familiar with traffic light. However, if someone was asked how does traffic light signal work, barely a few people can give the correct answer to the question how does traffic light signal work.

Here is a lot of mystery surrounding how traffic signals work. To find the answer to the question of how does traffic light signal work, you need to know that in a nutshell, a traffic signal installation is comprised of a controller, traffic light heads and detection. The controller is the ‘brains’ behind the installation and contains the information required to force the lights through various sequences. This information will help us to understand the answer to the question how does traffic light signal work.

Besides, in order to figure out how does traffic light signal work, you might also want to know some knowledge about the operation mode of traffic signal. This is one of the most common modes of operation for traffic signals and as the name suggests it takes into account the vehicle demands on all approaches and adjusts the green time accordingly. The traffic demands are registered through the detection installed either in the carriageway or above the signal heads. 

Actually whenever we start to notice these familiar things in our daily life, there will always be some new information to find. By asking the question how does traffic light signal work, we have found out how the public transportation are operated in a logical way.