skyscraper101
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Well, they're not. They're updated in real-time depending on the position and speed of the bus, and other buses on the same route. The system knows how far away the bus is, and works out how long it should take to get there, based on how long other buses have taken to make the same journey recently. The best it can manage is to within a minute or two. I don't think you or I would be any better at making that judgment if we had the location data.
Fascinating stuff
It's still no good if the bus is stood still two minutes away in theory, and your countdown just repeatedly says '2 minutes' if the bus is stuck in a jam, or parked up mid-route, or whatever. I want to see a dot on a map which tells me, visually, that the bus is either moving, or going nowhere for the last 5 minutes. And that's the difference between me opting for another bus or not, or even walking if I can. Fuck trusting the TFL system of working it out, if the best it can do is 'within a minute or two' then I'm not interested, and it's failed me too many times.
You know the data is there. I'm surprised you don't want it to be harnessed better.
The Nexus Q is terrible. 3x the cost of Apple's equivalent, and doesn't even work standalone.
I totally agree with you on this