On Sat, 21 Sep 2013 00:36:00 +0100 SomeoneElse <li...@mail.atownsend.org.uk> wrote:
> I've noticed that locally a number of "GB:nsl_single", "GB:nsl_dual", > and "GB:motorway" "maxspeed:type" values have been consolidated into > "gb:national", so that that gone from nowhere to being the second > most-used value: >From a quick skim through the data near me it appears that changes are limited to ways that used to have non-numeric maxspeed values, e.g: maxspeed=GB:nsl_single => maxspeed=60 mph,maxspeed:type=gb:national Has anyone unearthed any that are actually changing an existing maxspeed:type tag? > Is this how we're mapping "national speed limits" now? I've been using the maxspeed=60 mph,maxspeed:type=GB:nsl_single form when mapping and I thought that I was following the herd. > Other than > simple Garmin maps I'm not a consumer of the data, so am happy with > whatever people decide. Actually, I was happy using > "maxspeed=national" until some people (writing routers I think) > complained that they couldn't figure out whether "national" meant > 60mph or 70mph and what other restrictions might apply, and insisted > on a numeric value in maxspeed, but I was happy to go along with that > as long as the fact that it's a national limit rather than a numeric > one wasn't lost. I'd agree that maxspeed=national is insufficient as it is impossible to tell what speed you can do in a built up area. I'm also not a huge fan of the current practice of placing "single" or "dual" in the maxspeed:type tag either as I consider the number of carriageways to be feature of the road rather than the speed limit. I guess if I had the luxury of redesigning the way we tag speed limits it would look something like this: maxspeed=x mph - where x is the posted speed limit or 30/60/70 mph for national speed limit roads. maxspeed:type=GB:(zone|limit|national) - The type of limit in force. carriageway=(single|dual) - The type of road. > Apologies if this has already been discussed at length somewhere > else, but if so I never got the memo :) Not to my knowledge. -- Regards, Andy Street type of limit in force. carriage _______________________________________________ Talk-GB mailing list Talk-GB@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk-gb
