[Tagging] Center turning lanes: centre_turn_lane=yes method vs. lanes:both_ways method

Paul Johnson baloo at ursamundi.org
Thu Feb 16 14:20:35 UTC 2017


On Sun, Feb 12, 2017 at 4:43 PM, Albert Pundt <roadsguy99 at gmail.com> wrote:

> To go along with my earlier question about "semi-divided" streets, what is
> considered the best way to map center turning lanes? I know of the
> centre_turn_lane=yes key, as well as lanes=3 used together with
> lanes:both_ways=1 and turn:lanes:both_ways=left, but which of these two is
> considered better or is simply used more? Additionally, are there any other
> ways of doing it?
>
> centre_turn_lane=yes seems more straightforward, but the lanes:both_ways
> method offers a more detailed description of lane layout. I've seen both
> used in the wild.
>

Try (assuming drive on right areas):

lanes=3
lanes:forward=1
lanes:both_ways=1
lanes:backward=1
turn:lanes:both_ways=left
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