[OSM-talk-be] Road status & width

[André Pirard]

On 2014-03-11 20:23, Ben Laenen wrote :
> On Tuesday 11 March 2014 02:21:28 André Pirard wrote:
>
> NGI rules:
>
> N#, N##, R#, R##: primary
> N###: secondary
Not exactly. on the TOP10R map I've shown, N633 (Ourthe), N678, N30
(Beaaufays-Aywaille), N3 (Liege-Germany) are all in red, that's
"national", but of different widths.  Administrative classification.
...
> So, drop all the "making sense" bits in the OSM rules, and we get the NGI 
> rules :-)
>
> But the wiki page should be adjusted to get the above rules, as that's how 
> almost all of Belgium is currently mapped...
That's almost fine.
But if I look at N674, one part linking N30 and N62 is primary, the next
part going west is secondary, *and that makes sense*, But the third part
called "route de Méry" is not to be recommended for secondary traffic in
my opinion. It's 5 m wide, winding and as a moderate size lorry can be
2.5 m wide, they can hardly cross one another, not speaking of
agricultural/farming vehicles that are frequent on that road.

And all those classifications are subject to discussion and hence
imprecision.

This is why I believe that an *additional* classification would be much
beneficial to routing.
If the map contained road width, and road surface, routing software can
compute altitude and rectitude and it would have *objective* (not
subject to personal feelings or any national convention) data to use for
optimal routing (as long as mappers can understand that restrictions are
mapped for routers to understand and not people).
And as road width is the easiest thing to measure on Bing with a JOSM
tool, and as road surface is something that someone living no more than
10 or 20 km away knows or can know, Belgium could be optimally mapped
for routing in a short time.  And OSM routing developers would certainly
be happy to use that data.

Cheers,

André.



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