Underpasses are extremely dangerous in a tornado. The wind actually speeds up to get the same amount of air through a tighter area.
Agreed. Look at my post #330
Yes, it's just so much safer to remain exposed on open highway with no shelter whatsoever than to seek the reinforced concrete and steel of a highway overpass. /s
This "myth-busting" seems to be generating a myth of it's own. Where would you suggest individuals stuck on a highway with an F4 bearing down upon them go?
Realistic choices, please. You're talking largely flat country. Heavy rain and large hail, near constant lightning. You might drown in a ditch or culvert, and still have no protection from 200 mph winds with airborn debris. Staying in your car can be suicidal, but what the heck, you always loved Thelma & Louise, whee!
Seriously, what on earth do you suppose people stuck on a highway are supposed to do, here?