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:jayte...@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


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