[Talk-GB] Secondary, tertiary and unclassified

[Andy Townsend]

On 04/11/2015 12:54, James Tait wrote:
> ... I stumbled upon a changeset[1] that highlighted questions
> I already had about the tagging of roads in Mickleover.

I'd tend to agree that Mickleover's "over-tertiarised" (and it's not the 
only place).  It might be something to raise at the next East Mids pub 
meetup (which will probably be in Derby in mid-November). Something that 
I've done elsewhere where people have gone a bit mad with tertiaries is 
to also map the road width; that way renderers can choose to use that if 
they want (3).

> ...
> If I were to follow the guidelines in that changeset,

(which was [0] below)

> Uttoxeter Road
> (B5020) would be a tertiary road, and Etwall Road would be
> unclassified.  I don't know which roads are maintained by the Highways
> Agency, but my gut says that the A38 would be a trunk road, and the A516
> might be primary.

No - the "rules" for trunk, primary and secondary are as spelt out by 
Tom Hughes, and have worked well.  There are minor exceptions where the 
official classification hasn't caught up (e.g. something that's 
"officially" an A road that you can't drive down most of the time) but 
let's try not to make things more complicated than they need to be.

Cheers,

Andy (SomeoneElse)

> JT
>
>
> [0] http://www.openstreetmap.org/way/26773899
> [1] https://www.openstreetmap.org/changeset/25091307
>
> - -- 
> - ---------------------------------------+--------------------------------
> James Tait, BSc                        |    xmpp:jayteeuk at wyrddreams.org
> Programmer and Free Software advocate  |        Tel: +44 (0)870 490 2407
> - ---------------------------------------+--------------------------------
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(3) 
https://github.com/SomeoneElseOSM/SomeoneElse-style/blob/master/style.lua#L232