On 5/7/2011 9:57 AM, Serge Wroclawski wrote:
What I've done is to create a customized PL2 instance which renders
streets and highlights missing sidewalk data. I also provide a
background layer of imagery, showing the pavement. From these two
things, you can determine if a road has a sidewalk, and mark it up
using a simple sidewalk={both|left|right|no} tag.
If you expand the project outside the US, you might want to avoid the
word 'pavement', which means sidewalk in the UK.
This will allow a router to determine if the street is walkable.
It's certainly more pleasant to walk on a sidewalk, and a router should
prefer sidewalks, but any street is walkable unless tagged foot=no. You
simply walk on the side of the road, against traffic.
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