[Talk-us] New MapRoulette Challenge - Add Surface to Highways

[Matthew Whilden]

If you want to use the data for non-routing questions I'm sure specificity
can help. Like, imagine I want to estimate road maintenance costs by
latitude or something of that shape.

Matt

On Wed, Jan 25, 2023 at 10:28 AM Eric H. Christensen via Talk-us <
talk-us at openstreetmap.org> wrote:

> ------- Original Message -------
> On Wednesday, January 25th, 2023 at 11:35, Joseph Eisenberg <
> joseph.eisenberg at gmail.com> wrote:
>
>
> > Why do we need surface=asphalt vs surface=concrete for highway=motorway?
> >
> > Does this make a significant difference for any users?
> >
> > I can certainly see the value of adding unpaved surface values for other
> classes of roads, but all motorways in the USA (and likely worldwide) will
> be paved
>
> I can see that being an assumption but unless you verify that to be true
> you can't just summarily add that kind of data to the set.
>
> Does it make a difference?  I'm not sure.  There are definitely friction
> coefficient differences between the two surfaces and I'd be willing to bet
> that one would be more efficient to travel across than the other.  Perhaps
> routing engines could use this information to provide an even better, more
> efficient route.  Of course, that is just an idea.
>
> R,
> Eric
>
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