I am not sure if I am following each example you mentioned - however, for this example route http://www.openstreetmap.org/directions?engine=mapzen_car&route=35.2991%2C138.9550%3B35.2958%2C138.9439#map=17/35.29720/138.95192
You could add in interchange information(destination* tag) on the way departing the highway: http://www.openstreetmap.org/way/34098787 Also, you could add interchange information(destination* tag) on each way at the fork in the ramp: http://www.openstreetmap.org/way/59175151 http://www.openstreetmap.org/way/285333466 Examples from here may help: http://wiki.openstreetmap.org/wiki/Exit_Info Duane On Sun, May 29, 2016 at 10:29 AM, johnw <jo...@mac.com> wrote: > Ran into a tagging issue today while cleaning up a (complicated) area of > Tokyo I visited. > > https://www.openstreetmap.org/node/3851821325 Came across this > highway=motorway_junction node. Seemed in the wrong place. > > Out in the Japanese countryside, the tollway exits usually have these > properties: > > - a “junction" has an exit in both directions of the motorway (both the > “down 下 “ and “ up 上 ” directions), so adding highway=motorway_junction to > the two exit nodes makes sense. > - these exits (usually) then meet at a common toll plaza between the > motorway and the main road network > - which lead to a common “entrance/exit” intersection(s) on the roads > linking to the tollway, which have labeled intersection signals (sometimes) > https://www.openstreetmap.org/#map=17/36.33227/139.10122 > > - more complicated entrance and exit ramps still lead to a common toll > plaza, so entering from one direction of travel or another on the normal > road doesn’t limit your direction of travel on the motorway. > https://www.openstreetmap.org/#map=16/36.3511/139.2196 > > So how to enter the tollway seems obvious, but now there are more and more > complicated entrance/exit schemes popping up, especially with "automated > toll collection" exits and entrances around service areas and tunnels, like > my questionable node is for. > > having an entrance-exit that only serves one direction of the tollway in > rural areas has led to many “wrong way” drivers on the tollway. I have > personally seen two in the same spot near a one-sided junction. They assume > an entrance feeds both directions (as is common), and go backwards up the > exit ramp after the automated toll gates. This has led to a TON of signage > and arrows and other visual cues being installed on every motorway in the > last year or so - because of the rapid increase of separated entrances and > exits making more and more wrong-way drivers. The offending junction pair > in my area: https://www.openstreetmap.org/#map=17/36.30869/139.09130 note, > like the US, direction of travel means different exits and entrances, > unlike Rural Japan (and my above examples) where a single connection to the > normal road network allows access to either motorway direction, which is > very common on the hundreds of junctions outside of Tokyo. > > This idea of tagging just the “exits” doesn’t help when: > > - the entrances are separated or have different access roads from the > exits. So, so much signage is dedicated to finding entrances in complicated > road networks - not tagging entrances seems to go against that. > - the “entrance” is so far away from the exit that the label for the exit > node is not useful as an implied indicator that there is an entrance there > too. It’s not useful to imply an entrance in general, since there might not > be one (such as the offending node’s Southbound junction is exit-only). > > This particular node marks an entrance that is very very difficult to > return to, so it caused me a big headache when I missed it a few months > ago. https://www.openstreetmap.org/node/773008249. I thought I had a > hundred more meters until the entrance. > > - there is no exit node, just an entrance node, therefore the node label > on the motorway itself can be hundreds of meters away from where the > motorway_link begins, leading to missing the entrance (when used as a > visual map), or, if I am understanding the wiki, shouldn’t be tagged at > all. > - The road network is so complicated, the junction labels overalap the > entire rendered motorway, which visually implies there is an exit in a > direction with no exit. (as in my node’s case, causing this email). > > so: > > - is highway=motorway_junction just for exits? it’s wiki page seems to > imply/state it. Where is the corresponding motorway_entrance then when it > is just an entrance? do we not need them? > - if the junction is only an entrance in one direction of travel, wouldn’t > the highway=motorway_junction be more useful on the node where the link > meets the normal road network (where the driver has to make a no-way-back > decision), or is that not needed? > > A user in the discussion page also had a good point - the motorway_link > (both exit and entrance) roads often have multiple connections, names, > refs, exit_to, etc values, but the wiki page implies that getting this > information onto the link way or node is not necessary for entrances. What > is best? > > http://www.openstreetmap.org/#map=17/35.29627/138.94919 the Gotemba exit > ( Motorway_junction Ref=7) near Mt Fuji has “gate 1” and “gate 2” with > their own entrance and exit links to handle traffic going in different > tourist spots, and labeling them correctly would be nice, as it is weird. > http://www.openstreetmap.org/#map=17/35.29627/138.94919 > > > Suggestion: > > would something like entrance_to= or highway=motorway_entrance be a good > tag? we should be able to tag, somehow, that this is a labeled and signed > entrance for the tollway, and what motorway direction(s) it serves without > relying on the name field (if I understand this correctly). A widening > mouth/triangle head pointing onto the motorway / triangle tip ointed off > the motorway might be a good rendering idea for the different entrance/exit > ways (or something else visual) if words are not rendered.Something to > render the entrances and exit junction labels differently, at least having > junction entrances rendered only at a high zoom, while leaving the junction > labels as they are now at low zoom to label the road network. > > Trying to stuff all this meaning into the name or ref for the > entrance/exit motorway_link seems kinda haphazard, compared to the tagging > options available to much less important details. Adding motoway_entrance > (and maybe motorway exit) may help label and define these complex > motorway_link road node intersections, or some other scheme to add this to > the motoway_link ways themselves. > > Javbw > > _______________________________________________ > Tagging mailing list > Tagging@openstreetmap.org > https://lists.openstreetmap.org/listinfo/tagging > >
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