Longest Road Segments Where Opposing Traffic Is Not Visible

[Dirt Roads]

US 15 north of Williamsport, PA, is another interesting one. There's no individual examples of more than 5 miles or so, but there's several stretches of about that length, and it's the opposite of I-64 in terms of character and scenery.

It's got to have some of the biggest elevation differentials between directions, too: Most examples of oncoming traffic not being visible are caused by trees, distance, or both, but here is a unique example caused by elevation. Speaking of which...

Since this thread starting running down roads that are not freeways, my favorite is the split section of US-460 between Narrows and Glen Lyn, Virginia.  That section runs about 5 miles, and the westbound lanes are on the old curvy road up on the cliffside overlooking the New River.  Technically, there's a few places that you can look down on the eastbound lanes when the leaves are down if you dare to drive too close to the left-hand guardrail.  There's been plenty of discussion on AAForum, but this one from the Speed Differences thread gives you the gist:

https://www.aaroads.com/forum/index.php?topic=16989.msg2123117#msg2123117

On US-460 between Narrows, VA and the WV line, the curvier westbound lanes have a limit of 40 MPH, whereas the eastbound lanes remain at 60 MPH.

Back in college, both sets of lanes were posted at 55 mph (but I was about the only person who dared to drive westbound at those speeds).