[Talk-us] Route Relations and Special (Bannered) Routes

[Craig Hinners]

This was discussed in the August 2011 thread, "Use of ref-tag on state
highways".

At the time, a number of people seemed to be on board with the
"network-classification-per-banner" scheme, as in:
 network=US:US:Alternate
 ref=1

Or, something similar at the state level:
 network=US:VA:Secondary
 ref=7100

I think all that really remains is to formalize/define the valid values
for the various federal- and state-level "network" tags in the wiki.