<html><P>OK, I looked into it a little bit more. It turns out the routing engine Cloudmade is using will cross gate nodes with impunity, but will not encroach on an access=private way. YOURS will not cross gate nodes, nor will it use an access=private way. I like your proposed solution of having routing engines use private ways, but using a massive penalty for it to prevent use unless it is required. For routing engines that will route across gate nodes they should probably include a note about the gate in any accompanying turn-by-turn directions. I left a feedback comment to the cloudmade folks, we'll see if they do anything with it.</P>
<P>Thanks,</P>
<P>-Mike</P>
<P><BR><BR>---------- Original Message ----------<BR>From: Chris Lawrence <lordsutch@gmail.com><BR>To: "OpenStreetMap U.S." <talk-us@openstreetmap.org><BR>Subject: Re: [Talk-us] Routing - Gate Nodes, and Gated Communities<BR>Date: Thu, 11 Jun 2009 14:46:34 -0400<BR><BR>On Thu, Jun 11, 2009 at 2:17 PM,<BR>mike.onines@juno.com<mike.onines@juno.com> wrote:<BR>> Simple question:Â Should I delete gate nodes at the entrance to gated<BR>> communities, or can we agree on a set of tags that will let routing services<BR>> know a gate is operable, and is reasonably likely to be passable?<BR><BR>I think the correct behavior for the routing engine is to allow<BR>routing over "access=private" ways at the destination or start of a<BR>route and (if necessary) through a gate separating a private way from<BR>a public way, rather than trying to fix every private way in the map.<BR>The routing engine should then warn the user that the only route<BR>available involves private ways.<BR><BR>Routing engines could easily implement something pretty close to these<BR>rules by applying a massive penalty to private ways (so they are only<BR>used if essential in a route). The gate could just be treated as a<BR>separate routing penalty.<BR><BR><BR>Chris<BR><BR>_______________________________________________<BR>Talk-us mailing list<BR>Talk-us@openstreetmap.org<BR>http://lists.openstreetmap.org/listinfo/talk-us<BR></P></html>
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