3 ms·
>Yes, and those "sensors" have very limited precision. There's only one every several hundred yards. What? There’s one as far apart as you put them. The preci
by LeafItAlone 1y ago
>Yes, and those "sensors" have very limited precision. There's only one every several hundred yards.
What?
There’s one as far apart as you put them. The precision is what you make it.
- TylerE 1y agoAnd every sensor you add is additional cost, not just upfront, but maintenance for ever.
- LeafItAlone 1y agoAnd not having sensors results in not knowing where the trains might be on your track _forever_. I’m not entirely sure what you are trying to argue. Your original comment said you can’t know where trains are on underground subways because GPS doesn’t work underground, but that’s not the technology they use anyways, so it doesn’t make sense to reference it. The you seemed to argue that what might currently be in place is insufficient, but that wasn’t what this thread was talking about.
- TylerE 1y agoYou keep putting words in my mouth. I am just pointing out the usual HN tech dork ignorance of how real world mechanical systems actually operate. It's like any time an aviation thread is around here, the rank ignorance is incredibly painful.
- LeafItAlone 1y agoI haven’t put any words in your mouth, just summarized what I read. The only one showing ignorance here seems to be you suggesting subways use GPS.