Have you ever wondered why the traffic lights are red, orange and green?
Abel is now at the right age to apply for a driver's license. While he was learning how to drive, he was curious red, amber and green are used as traffic lights. Let's see what he found out in his research.
This is a project based video showcasing our student's knowledge search in understanding things that they see in real life.
![](https://s2.save4k.ru/pic/uC6HYAHMVH8/maxresdefault.jpg)