I can understand why you'd be annoyed if you had to include signed routes, and I have no intent of making KY follow ENG's foibles but rather making the point that one size doesn't fit all.
It's a fair point, to be sure. Users will have different expectations in different macro-regions (aren't most countries outside northern North America a little less OCD about signage?). But if we were to overturn the general guidance in the U.S. that unsigned routes are ignored, and adopt the "one size doesn't fit all" principle on a state-by-state basis, it seems that users could legitimately argue that just about any state-maintained highway ought to be included. I would prefer not to spend time regularly responding to those arguments.
On that note, this is where the Oregon sets stand:
·The set was drafted 2005-2006 in CHM with the data set largely as is, under the understanding that ODOT had numbered all the Highways to be Routes (with two exceptions, 372 and 420, which were not included in CHM and are not part of TM).
·Subsequent field checks have shown a handful of these new routes to be minimally signed, the rest not.
·However, while it may be easy to miss the turn off onto an unsigned route if not careful, once on the route, it's easy to follow. Exception: Finding the end point of OR 241 was a pain.
·ODOT shows non-signed routes on its official map as signed, notably, 255, 542, and the catalyst of this conversation, 350. I'm including 334, 413, and 402 on this list, as I've not had a chance to field check them. Others aren't signed on the map, presumably to size restrictions (ie, 250, 251, 331, 350, etc, and signed routes like 52 and Spur US 95).
https://www.oregon.gov/ODOT/Data/Documents/Map_Official_State_Front.pdf ·The ODOT GIS shows that the routes on the official map without shields do to presumptive size issues are signed, with an additional wrinkle of OR 201S/452/HWY 489 in Adrian.
·Knowledge of the underlying Highway system is pervasive enough in the cartography field that an ORH or two has been mapped since the 1990s, notably, HWY 2 and 2W in the Thomas Brothers atlases of the Portland metro area. The Highways have been well mapped by online maps since then. On the paper maps front, aside from ODOT's, the system as a whole, noting size restrictions as with the ODOT map, have been signed.
·As it currently stands, the Oregon sets comprises of 170 routes at 7550 miles. I don't think it's that daunting of a system to clinch, or to maintain. The inclusion of the unsigned Routes, or even of a complete Highway set (which would put Oregon at about 300 routes and an estimated aggregate 7620 miles because of overlap), wouldn't change that. Yes, changes would require altering two files if ORH were included, but compared to a system like Kentucky's 2942 highways at 26,200 miles, I can fully understand why adding unsigned routes to TM there would cause heartburn.
·Summary: The unsigned Routes have been in CHM and TM since 2005/6, under the understanding that the Oregon Transportation Commission had signed the underlying Highways (with a few exceptions), and that these Routes are signed on the official maps and GIS, if not in the field. A cursory poll of several unsigned Routes in TM shows that they are being clinched by users.