[Tagging] Sidewalks vs Footways

john at jfeldredge.com john at jfeldredge.com
Fri Mar 18 11:59:37 GMT 2011

What I was visualizing was not so much real-time traffic mapping, but rather that certain roads are almost guaranteed to be uncrossable on foot at certain times of day, such as at rush hour.  If you are trying to cross them at times when the traffic is light, it is possible to do so, with caution.

-------Original Email-------
Subject :Re: [Tagging] Sidewalks vs Footways
From  :mailto:dieterdreist at gmail.com
Date  :Fri Mar 18 03:46:30 America/Chicago 2011

2011/3/17  <john at jfeldredge.com>:
> You also have the fact that it may be physically possible to cross from a sidewalk on one side of the street to the other, due to a lack of barriers, and yet be inadvisable to do so at certain points (in the middle of a blind curve, for instance, or on a road that has heavy traffic and lacks pedestrian crossing-signals).  In some cases, crossing may be possible at some times of day but not others.  Hopefully, there would be a way to tag this information for use by routers.

Curves can already be detected by routers (they are in the data),
pedestrian crossing (with and without traffic lights) should be mapped
explicitly (in the 1 road, 2 sidewalks model it would be a way from 1
sidewalk to the other). Realtime traffic information (time of day,
amount of traffic) is a general issue that one day we might be able to
solve, given enough real time data input.


John F. Eldredge -- john at jfeldredge.com
"Reserve your right to think, for even to think wrongly is better than not to think at all." -- Hypatia of Alexandria

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