Not sure why every other city didnt do this.
Because there was obviously no government directive in that respect. It was probably left up to local authorities to liaise with transport providers to decide what to do. Public health policy needs to be determined by a national public health emergency team of professionals and not by city councillors or transport companies.
two of the most important numbers for establishing public health policy...
If you mean deaths and hospital cases, you need to know your R0 number in order to determine your health policy. If a virus is especially dangerous to those over 65 and 15% of your population is in that age range, knowing the R0 number helps you to determine how many hospital cases you're likely to see and how many deaths. In any case I think we're all agreed that the confirmed number of cases in Poland is far higher than the official figure.
Ireland, population 4.9 million, population over 65, 13% cases 25,111, deaths 1,659
Poland population 38 million, population over 65, 17%, cases 24,687, deaths 1,115
Now does that make any sense to you? Ireland has about one eighth of the population of Poland, a lower percentage of over 65s and yet Poland has the same number of cases and fewer deaths???