Those are turnouts and can be really beneficial for trucks that are practically crawling up hills, and where turning lanes just can't be fit in without extensive work. US 33 doesn't really have -that- much truck traffic to justify more climbing lanes and will probably have less once US 48 is fully complete in the state.
Agree on all points. And probably even less truck traffic on U.S. 33 if ADHS Corridor H is completed all the way from I-79 to I-81.
Those truck turnouts (how they're signed) do get a decent amount of use on US 33. They're not intended for normal passing, but for situations with log trucks and other large vehicles that are crawling.
My experience has been that US 33 generally flows OK east of Elkins. Some passing lanes on the straight-ish parts around Evenwood (
https://goo.gl/maps/xusbM7b8H8AdLMtUA) and Laurel Fork/Rich Mountain western approach (
https://goo.gl/maps/U1S7WYnzneXVAfsn7) would be nice but there's generally enough of a gap in traffic you can pass, and the grades coming down to Laurel Fork help with providing momentum.
Did you notice the extensive concrete work east of Buchhannon? They are doing major base repairs and diamond grinding sections; closer to Elkins, they are asphalting over previously asphalted-then-removed sections.
Yes, I saw all of that around the signalized intersection where U.S. 250 and WV-92 tie in to Corridor H near Norton. Wish that WVDOT would get rid of the signals here and on the northwest side of Elkins at the other connection with WV-92.
The concrete around the western US 33/US 250 intersection was rubblized. WVDOT posted a video on their social media earlier this year.
At one point, WVDOH had an interchange for the western US 33/US 250 intersection on their unfunded project wishlist. The signal at the eastern WV 92 intersection by Aggregates is more recent; at least with when I traveled, I experienced less delay when there was a stop sign pulling out here than now with the signal.