When I drive a police car, I like using the lightbar lights, with or without siren, because the traffic cars pull on the side and let me pass. That is fine. The problem is when my car is NOT a police car, it has no lightbar and no siren. Nevertheless, when I turn the lightbar on, the traffic cars have the same behavior, they pull aside to let me pass. I don't think this is normal...
Easy, I mapped a button of my driving wheel to the lightbar, so I can press the button at any time, whether I have a police car or not.
I was asking from the technical side. Using the light bar button activates a lightbar controller function that turns it on. If there is no light bar then there should be no controller so this shouldn't work. So does the traffic behavior change in relation to the siren sound (which is independent from the light bar), and it still hears the siren even if no sound is selected? This doesn't make much sense lol