Hi, I need some help to resolve an impasse I've reached with an OSM mapper about the proper tagging of destinations on motorway exit ramps. While following a route on my Garmin GPS device, my turn off of the NYS Thruway for Exit 49 was displayed as merely "49" (without the quotes). There was no other destination shown despite plenty of signs indicating the exit was for NY 78, Depew, Lockport, including the sign just prior to the exit ramp.
The original mapper tagged the exit ramps, i.e., the ways immediately after the exit node (correctly tagged with ref=49, highway=motorway_junction) with: destination:ref=NY 78 destination=Depew;Lockport highway=motorway_link junction:ref=49 lanes=1 maxspeed:advisory=40 mph oneway=yes ref=49 surface=asphalt IMO, all of these tags are correct except the ref=49 which I believe is what's triggering my GPS to show "49" on its screen. I compile my own Garmin-compatible maps and can change the interpretation of destination tags if that is the correct tagging for exit ramps but I don't think it is correct. That's why I'm raising the topic here. By the way, I used OSMAnd on my phone to follow the same route and got the same result, the turn from the Thruway at Exit 49 to reach Lockport was indicated by the two numbers "49" (without the quotes). All the ramps in that intersection were tagged with ref=49 by this mapper. I don't do much expressway or motorway mapping so I wasn't sure if recent changes had been made to the tagging scenarios for exit ramps but upon reading the Wiki pages on motorway_junctions and exit ramp destination tagging I cannot find any justification for tagging an exit with an ordinary ref tag.This ramp does not have any ref associated with it and Exit 49 is the only exit of the six or seven nearby interchanges I checked that use this scenario. I contacted the original mapper via a changeset comment but after scolding me about tagging for the renderer, he justified his tagging and did not offer to change it. IMO, simply removing the incorrect ref=49 tag from the ramps in the intersection would solve the problem. Opinions? -- Dave Swarthout Homer, Alaska Chiang Mai, Thailand Travel Blog: http://dswarthout.blogspot.com Flickr: https://www.flickr.com/photos/184600884@N06
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