alt Hacker NewsThat also creates a problem that people then can not hear important announcements or be aware of dangers (such as knife wielding attackers, as happened on an LNER train just late last year)
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7952 • today at 9:38 AM
A deaf person wouldn't be able to either. We need better non audible ways of signalling.
You can still hear those things, just not obnoxiously loudly. NC works best against static sounds. Speech still makes it through. Just not as loud.
If you're in a busy car enough people will hear it to be aware, and if you're on your own you will hear the announcement clearly.
Besides it's really a one in 10 million chance you'll get stabbed on the metro, not worth worrying about. The chance of getting hit by a car in traffic is much higher. That feeling of always being in some kind of danger seems to be very American, I never really see that in people here in Europe. I think it's the sensationalism in the press there, every little incident is blown up to massive "BREAKING NEWS!" proportions.