[Talk-us] US Interstate exit junction exit_to tag

[James Mast]

Well, I was just testing MapQuest and it thinks that I-74's split there from I-77 is the main highway (somewhat).
http://open.mapquest.com/?le=t&hk=7-OEgrKIB6&vs=
It says "Stay STRAIGHT to go onto I-74 E."  The problem is it's a "Left" exit.
The line should say something like: "Take Left Exit #101 to continue on I-74 East towards Mt Airy/Winston-Salem."  This is what Google says on their map: "Slight left at I-74 E (signs for Mt Airy/Winston - Salem)".  Heck, I've been fighting with Google trying to get them to mention the Exit number for that step as well, but haven't had much luck.
This is what we need to work with MapQuest to fix.  Maybe a special "exit_left=yes" or "left_exit=yes" tag?
 


Date: Fri, 8 Apr 2011 13:42:16 -0700
To: talk-us at openstreetmap.org
From: Alan_Mintz+OSM at Earthlink.Net
Subject: Re: [Talk-us] US Interstate exit junction exit_to tag

At 2011-04-07 22:57, James Mast wrote:

You know guys, we should also figure out right here and now how to deal with "left" exits at Interstate splits where both ways are "motorways". Here's such an example:
http://www.openstreetmap.org/?lat=36.49591&lon=-80.74103&zoom=16&layers=M
It's the I-77/I-74 split in NC. I-74 splits off to the left using an I-77 exit number (Exit #101). Something like this would need an extra tag on the node where the highways split.
Looks mostly right as is, except I capitalize East (and want it in its own tag), hyphenate I-74 (because it is in a name field, not a ref), and would move the destinations to the towards tag:

exit_to="I-74 East"
towards="Mount Airy / Winston Salem"
ref=101

OR

exit_to_root="I-74"
exit_to_dir="East"
towards="Mount Airy / Winston Salem"
ref=101

Because it is the start of the motorway, I see no reason to call it a motorway_link. I just continue the new motorway right up to the motorway_junction.

--
Alan Mintz <Alan_Mintz+OSM at Earthlink.net>

_______________________________________________ Talk-us mailing list Talk-us at openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-us 		 	   		  
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstreetmap.org/pipermail/talk-us/attachments/20110408/b852a1c0/attachment-0001.html>