Descending down a mountain
1st timer hauling North Carolina mountains. Little nervous about the descent on the way back to flat land. I will be towing my parents TT which is 7500lbs total weight. Give me any tips or pointer...
Forum Discussion
sacmarata wrote:proxim2020 wrote:Passin Thru wrote:
BB is 6% for 5 miles, some interstates are 9%, but no more out west. Never saw anyone descend up a mountain!
All "interstates" must be AASHTO compliant and restricted to 6% grade. Waiver can be issue from the Federal Highway Administration for mountainous regions, but restricted to 7% with speeds under 60 mph. The Eisenhower system is designed to move military equipment across the country quickly and efficiently. When moving heavy or sensitive equipment, grades are important.
Are you a state highway official?
Nope, but I enjoy researching and reading about all kinds of things. You can check out "A Policy on Design Standards - Interstate System" for all of the standards that are applied to interstates. Also you can find copies of "The Green Book" online which show standards for road and highway design.
