make highway=residential at z12 thinner

[matkoniecz]

to prevent potential confusion:
In version currently used on OSM website both highway=unclassified and highway=residential are rendered from z10.
#1682 proposed rendering highway=unclassified from z11 and highway=residential from z12

@pnorman merged this pull requested and added commit 93789b6 - that set both unclassified and residential to render from z12

This pull requests makes highway=residential thinner (0.4 width instead of 1.0).

550px preview:
https://cloud.githubusercontent.com/assets/899988/8900694/d49ea19c-3442-11e5-86b6-07d6d5c8f12d.png
https://cloud.githubusercontent.com/assets/899988/8900696/d4a387b6-3442-11e5-851c-09b88a3eebd6.png
https://cloud.githubusercontent.com/assets/899988/8900695/d4a36178-3442-11e5-8f36-4688f1bc099d.png
https://cloud.githubusercontent.com/assets/899988/8900697/d4a3bd12-3442-11e5-8e52-b906a01805a2.png
https://cloud.githubusercontent.com/assets/899988/8900698/d4a665da-3442-11e5-9a25-0d239a2e9562.png

1000px preview:
https://cloud.githubusercontent.com/assets/899988/8900701/d7e785c6-3442-11e5-9d4e-ddaf5129ab71.png
https://cloud.githubusercontent.com/assets/899988/8900700/d7e71c58-3442-11e5-93d5-31326264d8e7.png
https://cloud.githubusercontent.com/assets/899988/8900702/d7e8c5da-3442-11e5-8554-0f790e7cdf96.png
https://cloud.githubusercontent.com/assets/899988/8900703/d7ea547c-3442-11e5-8b55-ba3b2ed7f6cc.png
https://cloud.githubusercontent.com/assets/899988/8900704/d7eed4e8-3442-11e5-9fb3-737b30de0af2.png

[pnorman]

I don't particularly like the idea of rendering unclassified wider than residential. It would encourage the idea that it's a higher classification

[matthijsmelissen]

Sorry, I didn't see your message yet.

[matkoniecz]

It would encourage the idea that it's a higher classification

Interesting - I was sure that highway=residential is below highway=unclassified in its importance.

[matkoniecz]

According to what I know about UK road classification, residential are subset of unclassified roads. highway=residential is used for these less important, used only to reach local residential areas.

It is not conclusive, but in https://www.openstreetmap.org/user/Mateusz%20Konieczny/diary/35389 some people commented on residential/unclassified change and nobody considered their importance as the same.

Since http://wiki.openstreetmap.org/w/index.php?title=Key:highway&diff=980296&oldid=969094 wiki has

• {{tag|highway|unclassified}} '''least important in standard road network'''
• {{tag|highway|residential}} smaller road for access to residential properties

On the other hand I just found http://wiki.openstreetmap.org/wiki/Highway:International_equivalence that claims that for many countries the same road should be highway=unclassified outside residential area and highway=residential inside.

I am not sure what would be the thing to do. Ask on tagging? Revert and ask on tagging?

See also http://www.openstreetmap.org/note/399513 for other relevant part of highway=residential/unclassified confusion.

[jojo4u]

@pnorman highway=unclassified is indeed of higher importance in residential areas. Outside of residential areas, but still urban, highway=residential is often not used. I advocate for more usage of highway=residential, but many tag this highway type only if there are houses on the side.

Inside a residential area unclassified can be used for:

1. Connecting the unclassified from outside through to the next higher classification, e.g. here: http://www.openstreetmap.org/way/168510739 or here: http://www.openstreetmap.org/way/155619568
2. Mark roads of high importance to the quarter where tertiary would not fit (e.g. no through-traffic): http://www.openstreetmap.org/way/203914369

[mrwojo]

It now looks arbitrary that some highways differ slightly only at a specific, relatively low zoom.