I dont know about your neighborhood - but I follow a few guidelines that I learnt from my family.. In Pakistan we used to have gatherings at our house that would have atleast 50 to 70 cars. Before that happened, we would go to the neighbors and inform them about it - not just one street, about 6 or so streets. They werent short streets either. I used to place road signs for detour too to direct cars to prevent traffic logging.
The local police station also got informed. (they were very happy with the road signs too)
That is how a society operates. I still follow this where I live - and also hire valet parking - sheriff knows about it too. - Never had a problem. However Ive seen problems happening where other people never informed neighbors or the cops. - My family live in other countries too and all follow same protocol.
The concept is that - if need be there should be space for an ambulance and other passenger cars to pass smoothly. and due to informing of such - you become part of everyones life around you aka society. (bandd ghar society nahi hoti)