What are the most dangerous roads / mountain passes in the lower 48

X% means for every 100 feet you travel, you drop X feet down. Doesn't sound like a lot but the more weight you have the steeper it feels ...

 

geometry classes use degrees, not percents.

 

During winter time, any road Fedex happens to be occupying

 

they all have their own character, needless to say, procced with caution until you get to know it. that's if you're on it enough, I might think one hill is no problem while another doesn't and vice-versa.

some hills will only allow slow.

 

To expand on what dca said ... they are different in each direction. .. you might learn very well what i-80 looks like going east over Donner but west is a different story ... There are many like this. Another one that comes to mind is 84 east in Oregon. Cabbage? Eastbound is a heck of a climb and not too bad descent. Going west do not let the downhill catch you off guard. Especially in winter. Then some are steep both ways ... example homestake on i90..

 

That's just semantics. It's still basic math no matter if we talk about an angle in degrees, or grade percentage.

 

gotcha makes sense now thanks.

 

Wolf Creek Pass Colorado

 

Twenty years ago maybe. But since they redid it, it's no worse than most.

 

US 50 through west Virginia
US 60 through salt river canyon in Arizona