80 mph would be better
We traveled that very stretch of I-81 for the first time in the past four days...did mostly 80MPH very smoothly and safely.
I have driven I-81 many times in the past, and Montana highways recently, that said, I-81 in Va and Pa scared the crap out of me because of the tractor-trailers that dominate the road. They show no mercy and band together in convoys, God help you if you get in their way. My wife and I even reported one trucker who was running people off the road, and the State patrol’s reaction was “ho hum”. Montana, on the other hand, had all these little crosses at scenes of fatal accidents, which had a sobering effect.