Hi Seems like a good idea. In the British Isles I find 359 maxspeed:advisory and no maxspeed:practical. maxspeed:practical was rejected: https://wiki.openstreetmap.org/wiki/Proposed_features/Practical_maxspee d but seems to be accepted: https://wiki.openstreetmap.org/wiki/Key:maxspeed:practical I'll do a patch for this sometime soon. Ticker On Tue, 2020-07-07 at 08:28 -0400, Greg Troxel wrote:
The mkgmap default style doesn't understand maxspeed:practical.
Thanks. I was unclear on this.
I would suggest that mkgmap should in the default style use the first one of these that is defined:
maxspeed:practical maxspeed:advisory (yellow sign, in the US, not a requirement, but advice) maxspeed (legal limit)
I am unclear on if advisory is used in non-US places. Here we often e.g. have yellow "45" signs on curves on roads with "55" limit (white) signs, and on exit ramps (slip roads in en_GB, *_link in osm). Sometimes the advisory speeds are sensible, some times they are way too low and occasionally they are too high. A great case for using practical to fix them.
I would expect this to be quite necessary in rural UK and IE, as it seems there is a tradition of 100 km/h or 60 mph outside town centers, but at times roads often narrower/twisty such that at least I didn't think it wise.
(The US doesn't do this so much; very rarely is the legal limit unsafe. There are dirt roads where :practical should be used, though.)