Need Guidance

mbbolton96:
First off, I have absolutely no clue what I am doing. All I know is how to solder, that electronics need a power supply and that usually wires need to be connected.

Now, what I want to do is to transmit a wireless signal from one car to another, namely that a blinker has been activated, so that it would be able to warn a car 2 or even 3 cars back.

Thanks so much!
Please ask questions because I'm sure you need more info than that and also please help because I'm excited about this.

Nice safety idea but....
What you want can probably only be done with radio.
Radio transmitters are difficult to make directional, so the signal would propagate in all directions and be picked up by every car nearby, even those going in the opposite direction. Not too bad on a fairly quiet stretch of road, but imagine the effect in the midst of a traffic jam in a two-way street with everyone wanting to turn one way or another. I'd turn the damn thing off before attempting to drive in London.
And how many drivers don't bother to use their indicators when turning? In one place I know, it's as high as 80%.