I'm assuming that because of your past event with OD you have had to rely on living with family to get on your feet. While I get that your father might be controlling and seemingly oppressive it would be presumptuous on my part to assume that there's not more to this.

Keep in mind you were taken in by these people, and by no means does that give them the right to control you, it does kind of say that there may be some basis in his controlling ways, if, that is that this is new behavior. Unless he's always been like this that's a different story.

On the other hand, Divine is right, that unless he has some kind of legal status to stop you from leaving and/or driving he doesn't really have a say in it, legally.

You should stand up for yourself if the above is true, that he doesn't hve legal power over you. Keep in mind though this is a person whose house you are living in, so although I strongly think you should make your case with him to stop doing so, it needs to be done with respect, and with thought of the fact that they are sheltering you, in mind.

Hope this helps.