[Tagging] Lane geometry in OSM

[Tom Hardy]

I've experimented a bit with lane and road attributes as in 
https://www.openstreetmap.org/way/505256201 and the adjoining intersection.
No width, but number, function and placement of lanes.  For placement, I 
always selected the center of the throughway.  This allows renderers that pay 
no attention to lane attributes to render a straight line through an 
intersection.

JOSM's "Enhanced lane and road attributes" visualizer shows this quite well.

-- 
Tom Hardy <rhardy702 at gmail.com>