[Tagging] Dispute prevention: meaning of lanes tag

[Martin Vonwald]

> This one is 4.4m
> http://t.co/UcFtIpkx
> http://osm.org/go/eu0E92UlP-

I would tag this as lanes=2, width=4.4 and if necessary
source:width=estimated  (or est_width=4.4).

> This one is, I think 2.3m. Easy
> to forget such things as others have said.
> http://t.co/4DK09ahQ
> http://osm.org/go/eu0Fswir

I would tag this as lanes=1.

Martin