I know this discussion is US specific, but we've struggled with similar issues in Brazil as well, for very similar reasons. It seems we've made some progress in the southern region when we chose to judge importance according to a somewhat simple method (it started as: trunk = best routes between place=city, primary = best routes between place = town; then we refined the population targets for each level), with the cost of requiring some discussion for uncommon corner cases (such as when the best route between a pair of large cities actually takes unexpectedly undeveloped roads). Some requirements based on structure are still in place (primaries must be paved, motorways must be divided, but trunks don't have to be divided). We've also assumed that routing quality can only be achieved after mapping speed limits and surfaces and cannot depend entirely on classification. It is still an experimental approach, but it seems like mappers and users are much more satisfied now. For verifiability, after a consensus was reached, we documented everything in the wiki. It's a lot of work, but maybe something like this would work in the US as well.
On Fri, Dec 27, 2019 at 3:39 PM Paul Allen <pla16...@gmail.com> wrote: > > On Fri, 27 Dec 2019 at 17:09, yo paseopor <yopaseo...@gmail.com> wrote: > >> You lost my point of view:(WHICH) the best (or worst) conditions for a road >> you can find in a country. In some countries will be seem like a motorway, >> in other countries or zones will be a sand track. And the other focus: WHO >> can know these conditions (local communitters, people who lived in the >> country, etc.) .This is an issue OSM will have to front some day. And some >> day we will have an agreement about it. > > > We're actually conflating several issues: > > 1) Road construction (paved/unpaved). > > 2) Number of lanes. > > 3) Central barrier yes/no. > > 4) Entry/exit types (simple junctions/roundabouts versus motorway on/off > ramps). > > 5) Legislation (kinds of traffic, stopping, etc). > > 6) Routeing preference: > > a) Speed > b) Distance > > In some countries, like the UK, these factors are all generally > well-correlated. To > a degree. Good routes between important destinations tend to get good roads. > Other > places, good routes between important destinations get bad roads, but they're > still > the best roads around. > > I think we need to start splitting up these attributes into different tags > and leave it > to editors to offer the appropriate combinations for a given country. Then > carto can > handle different coutries differently. Preferable two renderings, one aimed > at > construction (motorway down to dirt track) and the other aimed at "good route, > shame about the surface." > > I now have a quote from Calvin and Hobbes going through my head: "And while > I'm dreaming, I'd like a little pony." It's probably insoluble but if it is > soluble > it will take us decades to agree on a solution. > > -- > Paul > > > _______________________________________________ > Tagging mailing list > Tagging@openstreetmap.org > https://lists.openstreetmap.org/listinfo/tagging -- Fernando Trebien _______________________________________________ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging
