[Tagging] lanes tag dispute

[Georg Feddern]

Toby Murray schrieb:
> My take on lanes is that it should be the number of continuous lanes
> along a road. This impacts traffic flow and road capacity which allows
> routers to make more informed decisions. Turning lanes don't increase
> overall road capacity.

That's always the problem in OSM:
Is it meant as a "physical" tag or as an "intenionally" tag?

I would appreciate it, if we can reserve such general tags like "lanes" 
for general physical description and describe intentionally tags with 
their precise intention.

Like
lanes=4   physically all lanes
lanes:through=2
lane:turning_left=2

So I second Anthony.

Georg