I usually go Boston to CT or NY where there is always a quiet car but my point about it not being made obvious enough to those that aren't aware of its existenc

I usually go Boston to CT or NY where there is always a quiet car but my point about it not being made obvious enough to those that aren't aware of its existence seems like a fairly simple fix. There will always be the people that do not feel the rules apply to them but most of the loud people I encounter in the quiet car did not realize where they were.