So...let's begin.
As I seen on another PD this and PD that thread. Let us address few things, that kinda stand out.
Highways are never empty. They are packed in real life and would be also in the game if we had NPCs, we don't have NPCs cause they take up player slots.
But they are not empty. Then traffic lights are synced yes it's not an excuse anymore. If I have green I go, if you have red you stay put. And this sadly happens everytime. I always stop at lights and wait fo
Brett is right, I don't make the server's laws and I can't keep up with every little subjects. I was personally 100% sure it was yield everytime, green or red. I'm wrong but I can't know everything that changes on a regular basis by heart ?
tl;dr : Green is a go, red is a stop + yield.