[Tagging] [Bug] calculated shortest route wrong (was: often longer than fastest route)

Paul Johnson baloo at ursamundi.org
Wed Apr 29 19:42:05 UTC 2015

On Wed, Apr 29, 2015 at 1:58 PM, john whelan <jwhelan0112 at gmail.com> wrote:

> The difficulty is in many cities traffic lights are synchronised in such a
> way that cars may have to stop at the first but there after if they are
> travelling at or close to the speed limit they will not be stopped on
> subsequent sets of lights when travelling in a straight line.  ie there is
> no penalty.

I would love to know if there's a tagging schema to hint at which direction
the green wave <http://en.wikipedia.org/wiki/Green_wave> rolls on a
street.  Tulsa is somewhat notorious for reintroducing two-way traffic on
streets timed for one-way, effectively creating a "red wave" in the
direction opposite the street's previous one-way direction.  There's quite
a few around work and I dogfood the map on routine trips to find hangups.
Ideally, the "red wave" direction would be penalized severely for cars and
bicycles, and incentivized for pedestrians (since walking the direction as
the motorist's red wave usually produces a pedestrian green wave (or very
near to it) by coincidence in many cities).
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