[OSM-talk] Global consistency of the map (trunk etc.)

[Frederik Ramm]

Jan,

On Fri, 6 Apr 2012 20:16:32 +0200
Jan Kučera <kozuch82 at gmail.com> wrote:
> I guess we need to standardize some things accross the whole globe...

I don't think we do.

I think the ability to use OSM locally in the way that makes most sense
is a great advantage of OSM. Creating mapping standards that work in
Pakistan just as well as in Peru is difficult (and requires, at the
very least, someone from Pakistan and someone from Peru to contribute).
In the end you get a map that works neither in Peru nor in Pakistan
because it doesn't capture the locally important bits.

I don't think it really is a problem if people map things differently
in various parts of the world. Yes, it is possible that an app written
for Pakistan doesn't work as well if used in Peru, but hey, let's have
a Peruvian app then. We are local. We don't have to try and impose one
schema to the whole world.

> for instance the usage of trunk tag... somewhere (like UK) it is
> single-carriage and elsewhere dual-carriage, one lane vs. multiple
> lanes. current approach and rendering is terribly wrong... we need to
> add special rendering for dual carriage trunk roads i guess

Usually, dual carriage trunk roads are drawn as one way for each
direction with oneway=true, while plain trunk roads are just a single
way. I don't see that much of a problem.

Bye
Frederik