[Talk-us] Am I mapping this wrong, or should the router be fixed for this?

[James Mast]

I personally see no problem with adding 'nodes' where the stop lines are so that another mapper in the future can add, say, 'highway:traffic_signals=stop_line' or something similar once we nail down how to 'link' all traffic lights in an intersection and come up with a proper tagging scheme that all routers accept.  I know I always add that 'redundant' node when I'm doing a full scale cleaning of a highway so that there is less 'versions' in the history for said way.  That's why I also almost always add nodes to business driveways along major highways in case another mapper wants to come along later and add the buildings/service ways that connect to the main highway.  Saves them time too.

-James

From: tod at fitchdesign.com
Date: Mon, 27 Jul 2015 22:13:53 -0700
To: yourvillagemaps at yahoo.com
CC: talk-us at openstreetmap.org
Subject: Re: [Talk-us] Am I mapping this wrong,	or should the router be fixed for this?


On Jul 27, 2015, at 6:41 PM, David Wisbey <yourvillagemaps at yahoo.com> wrote: This issue reminds me of something I saw a lot of recently on OSMin Fort Collins, Colorado.  I get the impression that the mapper whodid this editing did it as a way to avoid the problem(s) mentionedregarding routing.  When I first saw this "peculiar" way of mappingtraffic signals, I didn't speak up.  I'm glad this finally got me to do so.
Instead of placing the traffic_signals key at the intersection nodes ofa dual carriageway (divided highway) intersection with signals, thismapper created "redundant" nodes on the ways (one-ways) prior tothe intersections (and prior to pedestrian crossings, of course) atthe point where vehicles (by law) must stop for a red signal.
Here is just one example of many in Fort Collins:
http://www.openstreetmap.org/#map=19/40.55255/-105.07708
David
Not really odd at all, and I’ve mapped plenty that way. Why? Because I was following the wiki: http://wiki.openstreetmap.org/wiki/Tag:highway%3Dtraffic_signals#Tag_all_incoming_ways
And from my software/engineering background it makes sense.
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