We’re talking about the entire Melbourne system but if I was asked to nominate the worst section I would suggest route 86 from Johnson Street to Melbourne museum. The bottom end of the 96 from St Kilda station to Luna Park would possibly be the runner up.
In San Francisco, where I visit regularly, there are more homeless people than in Melbourne and many mentally challenged too. But such people don’t seem to ride the trams. However, people often “do a dump” and I’ve seen that happen near Powell Street cable car terminus. And evidence thereof near where the J and N lines emerge from the subway. Lovely.
Apparently it does happen in Melbourne, too, but, fortunately, I’m yet to see it.
Paul in Melbourne (who rides trams regularly in different parts of Melbourne)