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A computer upgrade shut down BART

(www.bart.gov)
232 points ksajadi | 3 comments | 05 Sep 25 14:52 UTC | HN request time: 0.001s | source
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phkahler ◴[05 Sep 25 15:32 UTC] No.45139746[source]▶
It'd be pretty cool if busses and trains were local-first.
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gjsman-1000 ◴[05 Sep 25 15:34 UTC] No.45139769[source]▶
If you can't send updated schedules or emergency alerts through the system, I also don't want service started. It doesn't have to be an individualized problem to render local-first useless.

Also, what do you mean by trains being local-first? Trains by definition need to share the same tracks with catastrophic consequences for getting it wrong. You can't figure out if a train is going to possibly be on the same route locally, or if your route has been obstructed. Somebody gets a schoolbus stuck on a crossing, it takes over a mile to stop a train.

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zahlman ◴[05 Sep 25 15:38 UTC] No.45139826[source]▶
>If you can't send updated schedules or emergency alerts through the system, I also don't want service started.

In the days before systems existed for publishing such schedules and emergency alerts, should public transit service not have been attempted at all?

> Trains by definition need to share the same tracks with catastrophic consequences for getting it wrong.

Just because it uses the same rail gauge as intercity freight doesn't require it to run on the same set of tracks. But if it did, I assume "local-first" entails other traffic just being excluded when an emergency in the local system necessitates it.

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1. jonathanlb ◴[05 Sep 25 16:08 UTC] No.45140165{3}[source]▶
> Just because it uses the same rail gauge as intercity freight

BART has a non-standard rail gauge size that precludes it from interoperability with other rail networks.

https://www.bart.gov/news/articles/2022/news20220708-2

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2. badc0ffee ◴[05 Sep 25 16:10 UTC] No.45140191[source]▶
I was going to say, it just happens to be one of the handful of systems in the entire continent that does not use standard gauge.

Other ones I'm aware of are Washington DC's metro, and Toronto's subway and streetcars.

3. bluGill ◴[05 Sep 25 20:56 UTC] No.45143508[source]▶
Bart is india broad guage - a common enough standed that anyone making train parts will supply what you need. You can's share tracks with other trains but realisticaly you wouldn't do that anyway. If bart isn't running a train on some track it should be closed for maintenance not given to someone else.