Hi Andrew,
I think you also need to consider the maxweight and restrictions key in this discussion https://wiki.openstreetmap.org/wiki/Key:maxweight https://wiki.openstreetmap.org/wiki/Restrictions Is it not more likely that a road would have a displayed sign where a weight limit / restriction exists and this should be added to the road? I am not sure that most folks would have the ability to assess a culverts carrying capacity but I can see why you would like some attachment to the road way rather than the hydrology. I am however, not up on all the fine detail on tagging – it does my head in 😊 Cheers - Phil From: Andrew Hughes <ahhug...@gmail.com> Sent: Friday, 27 November 2020 11:16 AM To: OSM Australian Talk List <talk-au@openstreetmap.org> Subject: [talk-au] Tagging Culverts on Roads Hi All, Apologies for the boring subject, but I'd like to talk about mapping out Culverts on (way/highway) roads. https://en.wikipedia.org/wiki/Culvert The reason we would like to map these is that they influence road usage and in particular usage for heavy vehicles. They are very much like a bridge in that they have weight & width limits and often have conditions of use (such as maximum speed) or considerations during natural disaster scenarios (i.e. flooding). Note - tagging should be on the way, not on a node. This subject has a long-running chequered past that hasn't reached a conclusion https://wiki.openstreetmap.org/wiki/Talk:Tag:tunnel%3Dculvert#.22Tagging_controversy.22_section >From my understanding, the convention is to tag the water course (i.e. >river/stream/creek) as tunnel=culvert. It's great as it models where water >traverses man made structures and I can see it helping many scenarios. >However, it doesn't help with road usage. We need to model/tag the culvert as part of the road infrastructure. Questions : What are the correct tagging for the ways below? * Way https://www.openstreetmap.org/way/28010677 : * Q: Tagged as a bridge, but should it be? What else is missing? * Way https://www.openstreetmap.org/way/783119480 * Way needs to be split * Currently it is not tagged, only the water course is tagged with tunnel https://www.openstreetmap.org/way/27885431 * Q: What should the (split) segment be tagged with? We plan to be tagging a lot of culverts in the future, so it's important for use to get some clarity around this for obvious reasons. Thanks for reading & look forward to hearing your responses. Andrew
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