On 24 April 2018 at 14:28, Alex Sims <[email protected]> wrote: > You might be mapping for the renderer. :) > > I have been not giving slip roads a name and making sure they are > highway=secondary_link, trunk_link etc, which is considered valid by Keep > Right, Geofabrik etc. It also makes sense on the ground as there is no > physical sign on the slip road to give its name, it has none. > > This then works correctly when using mkgmap and putting the data on a > Garmin GPS. >
I agree, if there if is not named via a sign or otherwise on the ground then I would leave the name field on the link road empty. Routers should be able to work out the best instructions to give without a name on the link via the network already. This is in line with the wiki at https://wiki.openstreetmap.org/wiki/Highway_link#Tagging Link roads normally do not have names. Please use the destination=* and its > extensions tag to give the cross-street's ref=* and signed destinations > such as a city or the name of the destination street, so that routing > engines can correctly announce the exit to the "name or ref of the > destination street" as you enter the _link. It looks like these are "At-grade intersections" https://wiki.openstreetmap.org/wiki/Highway_link#At-grade_intersections says "Here too it probably makes more sense to consider the links as "belonging" to the more major highway." so I've always been giving link roads the classification of higher class road they are connected with, ie. in your example all 4 would be trunk_link.
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