trekin',

I have been on many group rides, and I also get annoyed when the "car back" call doesn't get anyone to actually make room.

However, when I am in a group ride I rarely announce when I'm passing someone. I'm constantly moving around in the pack, and I'd spend the whole ride saying "on your left" if I did so. If you're in a group ride, you have to remember that you are not alone, so hold your line, try to keep smooth and avoid sudden swerves and braking, and expect people to pass you.

I also will ride side by side and chat if the traffic and road allow it. Sometimes I'm side by side and not chatting - double paceline situations. But I do group rides in part for the social aspect of it.

I suggest you stick with the beginner ride that you liked so much, and I also highly recommend you call ride leaders and ask what to expect before showing up to an unfamiliar group ride. That way you can get comfortable riding in a group, and avoid putting yourself situations like that big ride.