On 9/18/2011 1:47 PM, Anthony wrote:
On Sun, Sep 18, 2011 at 1:38 PM, Nathan Edgars II<nerou...@gmail.com> wrote:
This can be determined by the geometry of the ways, which are mapped
at the center.
No they're not.
On Sun, Sep 18, 2011 at 1:39 PM, Nathan Edgars II<nerou...@gmail.com> wrote:
On 9/18/2011 1:38 PM, Anthony wrote:
Nevermind. Yes you can. If the center of the 3 lane road is to the
left of the center of the 2 lane road, then the lane was added on the
left. If the center of the 3 lane road is to the right of the center
of the 2 lane road, then the lane was added on the right.
Ways are not mapped this way.
Ways aren't mapped at the center? Where are they mapped?
Somewhere between the two edge lines. Always using the exact center
would require zigzagging whenever lanes are created or destroyed.
And even if they were, this would only work if there's a median.
What's a median got to do with it?
When there's no median, the center depends on both directions.
On Sun, Sep 18, 2011 at 1:40 PM, Nathan Edgars II<nerou...@gmail.com> wrote:
Not to mention that the line between the lanes doesn't always go straight
through the intersection.
Why does that matter?
Because if the pre-intersection right lane is directly behind the
post-intersection center lane, but an angled dashed line forces you into
the post-intersection right lane, this cannot be determined without
mapping this somehow.
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