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Tramtrack and highway

2 zpráv M J 2 účastníků 3 min čtení

Michal Wlodarczyk Michal.Wlodarczyk na tomtom.com #m7d025b 30. 7. 2024 9:05

Hello Czechia OpenStreetMap Community, I would like to consult you regarding the railway layer/feature in OpenStreetMap. Recently, our analyses and queries have indicated potential issues with this particular layer in the country. The tags highway=* and railway=tram should have separate representations, meaning different and distinct layers on the map. The tram should be captured as a separate way as per the Wiki OSM guidelines, but this is sometimes not the case ? Tag:railway=tram - OpenStreetMap Wiki 3<https://wiki.openstreetmap.org/wiki/Tag:railway%3Dtram> (Tag:railway=tram) ? Key:embedded_rails - OpenStreetMap Wiki 6<https://wiki.openstreetmap.org/wiki/Key:embedded_rails> (Key:embedded_rails) My goal is to support the creation of a MapRoulette challenge to help detect these instances and share them with the community. I am open for your input and remarks One last remark on why this is important for Tomtom, simply, we want to support map data consistency for all OpenStreetMap users, improving OpenStreetMap to accurately show and display roads with all vehicle accesses, as most people use them for mobility analysis, driving and routing applications. Here are some examples: Higway geometry shared with tram 50.10001, 14.39551 [cid:image003.png na 01DAE26E.325CBF70] 50.11168, 14.39401 [cid:image004.png na 01DAE26E.325CBF70] 50.06821, 14.40349 [cid:image005.png na 01DAE26E.325CBF70] Thank you for any feedback. Michal
Michal Wlodarczyk / Project Manager / Community & Partnerships / Open Map / www.tomtom.com<http://www.tomtom.com> michal.wlodarczyk na tomtom/<mailto:michal.wlodarczyk na tomtom/> +48 606 909 940 / www.tomtom.com/mep<http://www.tomtom.com/mep>
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Jan Martinec jan na martinec.name #m1bc550 30. 7. 2024 12:34

Hello, ((TLDR: yeah, why not; are there enough relevant cases though?)) As your examples show, there are two different usages here: the more common one (first two attachments: Vítězné náměstí and Podbabská) is a public transport stop where bus lines and tram lines serve the same platform. This is not intended for general traffic, not even for buses as a vehicle class, and should be tagged as such (e.g. access=no, psv=yes). This seems correct to me, as these are special roads that aren't for public use anyway. (Similarly for tram tracks that are technically drivable by road vehicles, but only emergency services are allowed to). Do you also suggest to remap these into separate ways? The other case is, IMHO, an actual case of outdated mapping, and something that could be fixed in a challenge. I think those are a minority, though - is it worth the effort to set up a challenge for these? Classifying one or the other (if tags are missing) would probably require OTG resurvey: I don't think this can be reliably decided from map data alone. Best regards, Honza "Piskvor" Martinec

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