Consider High Street in downtown Carlisle, PA. It is one lane each way, with a wide space as wide as a travel lane in the middle, but not used for anything such as a center turning lane. Tagging this with just lanes=2 seems wrong since it fails to take into account the lane width separating the two travel lanes, and since there is no raised physical divider, it doesn't seem right to mark it as a dual-carriageway road either. I've seen lanes=3 used along with lanes:forward=1 and lanes:backward=1, but that seems like it might be confusing.
What, if anything, is the proper way to tag roads like this? --Roadsguy
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