How can I put it? The complexity of the new traffic lights today is actually inseparable from their thinking. A set to solve all problems? Thoughts, like this? New traffic lights? The problem of color blindness is also considered, which means that color blindness can also see traffic lights normally, so the design of traffic lights will be more troublesome, because color blindness can't see red and green clearly. And there is another problem, that is, they want to use a traffic light to solve all intersections, no matter how many lanes. In this case, if it is two lanes, it is ok, because there are not many lanes to control, but if it is three or four lanes, especially four lanes, with left and right turns and straight lines, your traffic signal design logic will be very troublesome. If you are not proficient in mathematics, it is easy to design and design by yourself.
In fact, in the final analysis, the main reason why traffic lights are complicated is to solve all problems with one traffic light. This is equivalent to an original rice cooker that can only cook. Now you want it to take its own food, wash its own rice, cook its own food, and it can also make soup. Doesn't this add a lot of functions? Then the corresponding logic to deal with the problem should also be increased, which is reflected in the software level, that is, the amount of code programming increases. For example, how much rice to take, how long to wash rice, how much water to add to each cooking, and how long to cook soup. All these have increased the workload and complexity for it. Now the traffic lights are like this, so you will find it more and more difficult to understand, and feel that it is not as useful as the old one, because the old one has a single function, so you just have to do your own work.
Generally speaking, traffic lights are complicated because people want them to carry more functions. With more functions, they are naturally complicated.