On Mon, 2 Feb 2004, Kim Brennan wrote:

> Unfortunately, US interstate highways use a lesser standard than the
> Autobahn in Germany. Grades are steeper (6% though waivers can make
> that higher, versus 3%) and the roads are straighter (and more boring).

I wonder what the maximum grade on the Interstate highway system is?  I
think I've seen up to 8% in my own travels.  I seem to recall seeing 12%
posted somewhere, probably a U.S. route or county road.

David Brodbeck, N8SRE
'82 Volkswagen Diesel Westfalia
'86 Volvo 240DL wagon