[mafribe]

Could you justify the term "best practises"?

Last time I took an U-Bahn in Berlin, a guy was urinating in front of me. I have not seen such sociopathic behaviour in public transport in Tokyo, Singapore, Taipei, Shanghai, Hong Kong, Beijing. All are turnstile based. I feel that they are strictly better in almost all dimensions than e.g. Berlin's public transport. In all you pay with some variant of NFC tech, e.g. your phone. Zero effort.

Fine-grained access control also allows for better understanding of train usage, and capacity planning.

Cost of transport is orthogonal to access.

[ant6n]

Asian cities are very different from the West, so not sure lessons apply. Although Berlin is probably more affordable in PPP terms, and relative to population has more rapid transit than those asian cities (500km for 4.6Mio ppl).

In virtually all dimensions, Berlin transit is better than every US system, Except NYC. Which is ironically the only place Ive ever seen anybody pee in the subway, and that one is supposedly “protected” by turnstiles.

The US has a homelessness epidemic, Berlin has some problems in this area as well. This is a problem thats orthogonal to the transit system, and has to be solved by society at large. Turnstiles don’t solve homelessness.

[mafribe]

I did not bring up US public transport as an example of "best practises". I agree that Berlin has a extensive and well-developed public transport, and that is commendable.

> Turnstiles don’t solve homelessness.

Nobody claims they do. My anecdote illustrated the opposite direction: barriers remove one related cluster of reasons, related to personal safety, why some avoid public transport and prefer to drive by car, namely the fear to be accosted by vagrants, pickpockets, and other forms of sociopathy.

[ant6n]

But they don’t solve that as well, cf. NYC subway.

[mafribe]

Do you think this has something to do with the fact that turnstile jumping has been effectively legalised (in the sense of not being prosecuted) in NY?

Question for you: can you quantify, what fraction of crime and other forms of sociopathy in the NY public transport system you estimate to be committed by passengers who paid their fare? (My estimation: less than 1 percent.)

I don't think it's reasonable to assume that a simple metal gate alone can completely solve complex social dysfunction, a simple metal gate can however help, and, when we refer to turnstile access being desirable, we implicitly assume that we can reasonably expect turnstile use being adhered to, and violations punished with at least moderately high probability.