A nice design feature of subway turnstiles in Japan is that they are open by default. They only close if you try to pass through without a ticket. Subjectively, it conveys trust. Objectively, it probably results in less maintenance because the parts move much less frequently. 
I am speculating without specific knowledge but I feel reasonably confident in this speculation.
-
-
Ahh this bring back memories. Yes, some things, like those gates, should be "normally open". Others, like fuel valve in an engine, should be "normally closed"
Thanks. Twitter will use this to make your timeline better. UndoUndo
-
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.