Link roads between different highways types

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See discussion about this practice.


Based on my own understanding, this is how you tag the link roads, when dealing with different highway categories. Always tag the link with the highest class road.
From To The link between will be tagged as :
service/unclassified/residential/living_street service/unclassified/residential/living_street service
tertiary tertiary_link
secondary secondary_link
primary primary_link
trunk trunk_link
motorway[1] motorway_link
tertiary service/living_street service
unclassified/residential tertiary_link
tertiary
secondary secondary_link
primary primary_link
trunk trunk_link
motorway motorway_link
secondary service/living_street service
unclassified/residential secondary_link
tertiary
secondary
primary primary_link
trunk trunk_link
motorway motorway_link
primary service/living_street service
unclassified/residential primary_link
tertiary
secondary
primary
trunk trunk_link
motorway motorway_link
trunk service/living_street service
unclassified/residential trunk_link
tertiary
secondary
primary
trunk
motorway motorway_link
motorway service service
unclassified/residential motorway_link
tertiary
secondary
primary
trunk
motorway
  1. Except for living streets, which cannot be connected directly to motorways.