When these is no lack of reckless driving that comes from behind with the high beams, and there when you say, “would be nice if I could actually communicate with that driver.” Sure, there are some hand signals that you can use, but those are not exactly friendly.
In view of this, a hacker decided he wanted to change history and set out to make an LED display that could convey messages to people who came driving from behind.
The system consists of a mesh with about 60 LEDs. These lights are controlled by a microcontroller ATmega AT89C51, which stores messages to be displayed. With just a touch, you can politely inform people of their possible moves or you can choose to give them a message.
If you decide to carry out this project, the first thing to do is check your local laws regarding the lights on your vehicle. Some areas do not allow use of certain colored lights, while other areas may prohibit the altogether use.