the entire route is also the current routing for US 20. To me this seems unnecessary.
Tell that to the people who erected signs! There's loads of US20His concurrent with US20. And US6His in Provincetown doesn't even have the excuse of the road still being on the original alignment when it does it!
I know I am quoting an old comment, but it helps explain my confusion with this system.
Just because some group erected "Historic Route" signs, what makes a route worth including?
Is the some sort of "official designation" by state DOTs for historic routes?
If not, who determined which routes are included?
How will we know if the route list is complete? Is there some "master" list?
Will early US "auto routes" like the Lincoln Highway
https://en.wikipedia.org/wiki/Lincoln_Highway (which covered parts of US30, US50, and others) be included especially in places where is deviates from the existing alignment? (I know a great deal of signage exists in the Midwest on parts of this route).
What about routes that had different alignments over time?
Once usaush is done, will there be a push to do the same at a state level? (Are there even any signed historic state routes?)
I like the idea of adding historic routes, I just wonder whether enough consideration was given to the above questions. The system is already in "preview," so there is probably little chance of going back now. A little clarification might however be useful moving forward.
I'm all in favor of adding new systems. I was glad to see usanp and several state systems (CA, FL, GA) added to "preview" recently. I've still got some big gaps in places like AL, LA, and MS where state systems have not yet been developed.
This system just feels a bit slapdash especially if TM contributors are relying on "reports from the field" to make sure the route list is complete. Don't get me wrong. I appreciate the effort and will be glad to add any new routes to my list file. I'm just looking for a bit of clarity on this route system. It's still somewhat confusing as to the criteria for a route to be included.