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Similar real time traffic map for Switzerland https://maps.trafimage.ch/ch.sbb.netzkarte?baselayers=ch.sbb... >
I've mentioned this before on another thread about the swiss map but for the uninitiated: It's certainly a cool map and useful to get a general idea how many trains are around at any given time, but it's important to note that this is not real data. They use the train schedule combined with the projected delay to estimate track location. I'm not sure if it's because SBB has an interest in keeping reported delays low…
Author here! Thanks for posting the app! Two notes on what you are looking at: Not every vehicle is a live position. STIB-MIVB and TEC publish vehicle positions and those are shown as received. De Lijn and NMBS/SNCB do not, so their vehicles are computed from the timetable and corrected with the delays they do publish (GTFS-RT). Each marker is tagged live, computed with delay, or computed, and the computed ones are d…
This is well made, would love to have this in my own country as I can never trust the actual timers on the bus stops. How do you get access to the data? Is it a public government API? How did you manage to map all the routes too?
What country are you in? There are a bunch of different protocols used to exchange scheduled and live transit information out there. And there are also a lot of different companies actually operating the vehicles (Transport Authorities). Sometimes several within one large city. But even if they have different systems underneath often they expose one of the popular protocols. Often there are even rules/law about certa…
Earlier quoted context omitted.
We should also have a hierarchy: Platinum - Real Live Location Gold - Live as Estimated Where It Should Be From Last Observation Silver - Live as Estimated According to Published Schedule You Kidding Me? - Animated JavaScript...
I think subway rail systems do have "real live location", but whether that information is consistently provided to public distribution for use through apps is a question mark. I suspect most systems are a mix of your platinum, gold and silver (and kidding me).
In Dublin, train 'realtime location' is, AIUI, based on arrival at stations plus time-based estimate. This _usually_ works okay. Buses have transponders which register when they pass a stop. Or, ah, well, buses usually have transponders, and those transponders sometimes work. New buses sometimes lack them, as do very old buses used for covering capacity problems. If a bus without a transponder is used, they seem to just estimate where it is based on the schedule, which is useless. If a bus without a transponder is inserted out of schedule (they sometimes do this at peak time) it's totally invisible to the realtime system. Sometimes, the transponder isn't picked up, and then the bus will appear to hang around for a while and then abruptly teleport a few stops forward. Sometimes, a bus's transponder doesn't seem to start working when the bus starts up for the first few stops.
Still, it's better than when I was a kid, when you really just had the printed schedule, assuming the rain hadn't gotten to it.
I don't want to be negative here, just asking out of curiosity. Does anyone actually use apps/services like this? Why would it be useful? Normally when I want to get somewhere I just use local public transport navigation app which calculates the route and shows me estimated time of when my tram or bus arrives (taking into account its GPS data). Why would I need to know live position of every vehicle in the city? Neve…
Because there's about as many ways of taking public transit as there are users. For many, live maps are critical. I don't understand why either, but people want the "control" it offers and knowing that their bus is around the corner (it's not, the data is always over a minute stale because it goes through 5 intermediaries) Delete that feature and you suddenly get a horde of angry users
This is well made, would love to have this in my own country as I can never trust the actual timers on the bus stops. How do you get access to the data? Is it a public government API? How did you manage to map all the routes too?
Assuming these show 'live' data (as opposed to the estimated times based on the schedule), it's probably the same data that apps like this would be using.
Author here! Thanks for posting the app! Two notes on what you are looking at: Not every vehicle is a live position. STIB-MIVB and TEC publish vehicle positions and those are shown as received. De Lijn and NMBS/SNCB do not, so their vehicles are computed from the timetable and corrected with the delays they do publish (GTFS-RT). Each marker is tagged live, computed with delay, or computed, and the computed ones are d…
Well done. Very useful. concerning trains,when you click on any train, it's labelled Town A-Town B, while in fact in travels town B -> town A
Author here! Thanks for posting the app! Two notes on what you are looking at: Not every vehicle is a live position. STIB-MIVB and TEC publish vehicle positions and those are shown as received. De Lijn and NMBS/SNCB do not, so their vehicles are computed from the timetable and corrected with the delays they do publish (GTFS-RT). Each marker is tagged live, computed with delay, or computed, and the computed ones are d…