Talk:Tag:cycleway=share busway
Shall we define rules about how Q/A tools or route calculators should handle data?
Simply put, if a way has cycleway=share_busway, a validation rule could be that it must have at least lanes:bus=* or busway=*. Asymmetric road layout might be a problem: when we have cycleway=share_busway and lanes:bus=2, it’s easy (every direction has a bus lane and cyclists should use it); cycleway=share_busway and lanes:bus:forward=1 should be understood as sharing the bus lane only in the forward direction, because there is no cycle lane in the opposite direction. (Or maybe we should enforce using cycleway:right=share_busway for clarity.)
Also, lanes:psv=* can be a substitute for lanes:bus=*, not to mention other possibly exotic situations (only taxis and cyclists, for instance). I fear that the number of possible valid combinations might become really high.
Does anyone have thoughts on this, or should we rather not bother too much? Bxl-forever (talk) 18:00, 19 December 2018 (UTC)
Tag:cycleway=opposite share busway redirects to cycleway=share_busway but only the first tag was deprecated in the proposal, right, Supaplex030?
That's why I think there should be NO redirects from one tag to another... maro21 14:16, 30 June 2024 (UTC)
- Yes, only cycleway=opposite_share_busway is deprecated (and all other cycleway=* values with "opposite" in the value). There are no changes to cycleway=share_busway. What exactly is the issue here? Supaplex030 (talk) 15:23, 30 June 2024 (UTC)
- I moved deprecation follow-up to Tag:cycleway=opposite_share_busway and replaced redirect, to prevent confusion. --Chris2map (talk) 20:17, 30 June 2024 (UTC)
- There was missing page, but it is now. Thanks Chris for creating. maro21 22:25, 30 June 2024 (UTC)
Anyone else think this tag is a relict of an older tagging style?
I'm slowly starting to question the use of cycleway=share_busway much like how cycleway=opposite has been questioned for quite a while. Basically, cycleway=share_busway exists because it was invented during a time where the concept of per-lane access didn't exist and tells data consumers that it's okay to use the bus lane. Nowadays, with the invention of *:lanes=*, one can specify that cycling on a bus lane is fine in a situation too. This is particularly notable where the opposite case i.e. designated bicycle lanes which permit buses, are typically handled through bus:lanes=* (though some did use busway=share_cycleway).
Of course, in case someone goes and deprecate it, there is question on which value we'd chose, not to mention there are various QA tools which do consider the use of the tag more interesting (e.g. StreetComplete and how you can reply with lanes shared with buses) but at least in my case, being permitted on a bus lane doesn't automatically make it a bicycle lane so if I were a dictator on OSM, all instances of cycleway=share_busway would get a bicycle:lanes=* and be replaced with cycleway=no.