Show HN: Tube Map Live for iOS
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Show HN: Tube Map Live for iOS
1–7 of 7 posts
Re: Show HN: Tube Map Live for iOS
#2Wow, I knew they rolled out some access to countdown from the ibus system, but I thought hell would freeze over before they'll allow people to track tube locations.
Re: Show HN: Tube Map Live for iOS
#3Wow, I knew they rolled out some access to countdown from the ibus system, but I thought hell would freeze over before they'll allow people to track tube locations.
Its probably not the actual location of the tube, but a guestimate based on the departure time, arrival time and the distance between stations.
Re: Show HN: Tube Map Live for iOS
#4Used the tube map app while visiting London and it was incredibly helpful. Great to see this new improvement.
Re: Show HN: Tube Map Live for iOS
#5I made something similar for Philadelphia
https://play.google.com/store/apps/details?id=com.staticfish...
Re: Show HN: Tube Map Live for iOS
#6Wow, I knew they rolled out some access to countdown from the ibus system, but I thought hell would freeze over before they'll allow people to track tube locations.
Its probably not the actual location of the tube, but a guestimate based on the departure time, arrival time and the distance between stations.
It depends on the line. The more modern lines, have induction loops every 3 meters that allow precise measurement of current position, and also data for voice comms to the line controller.
On older lines, they can only detect when a tube changes power circuit and the resulting blue/white spark sends a measurable pulse down the power system. In this case, yes, they have to just count trains into and out of a section.
I learnt this by chatting to a TFL engineer in a pub, he designed the signalling systems equipment.
Re: Show HN: Tube Map Live for iOS
#7Very cool. Free app tried, paid app bought!