is a yellow light just a green light with some added information that it's almost going to turn red?Can you legally treat it like that?
A yellow light is a transition light. It tells you that the light is going to turn red anywhere from 2-7 seconds from now. Treat it like this. If you can't come to a stop without a panic stop, then drive through the light. If you have plenty of room to stop, you should stop. Don't guess, don't be aggressive, do what's smart.
Here is the deal with yellow lights: A yellow light isn't just a green light with added information telling you it's about to turn red. A yellow light warns you that you might have to stop and it is a good idea to move your foot over to the brake pedal incase you need to stop quickly. Yes, you can go through an intersection while the light is yellow, but if you enter the intersection and the light is red, you have run a red light. Generally if you are already in an intersection and the light turns red, it isn't considered running a red light. Legally speaking you can't treat it like that, but I would just treat a yellow light as a light that tells you to be prepared to stop quickly. Hope I helped!
No, you treat a yellow light like a red light if you can safely stop before entering the intersection. If you cannot safely stop, then treat it as a green light.