ptatohed
Licenced to Spell
In the AASHTO GDHS, Chapt 9, Section 9.5 (Intersection Sight Distance) - and specifically for Tables 9-5 and 9-7: How do you interpret this footnote? (please see highlighted portion of the Table 9-7 attachment).
I first interpreted it as add 0.1s for each % grade over 3%. But, I guess it could mean add 0.1s for every % over 0%, right?
So, if you had a combo truck on a +5% (up)grade, would it be tg = 10.5 + .1 + .1 = 10.7s; or 10.5 + .1 + .1 + .1 + .1 + .1 = 11.0s?
How do you guys interpret this footnote?
Thanks.
I first interpreted it as add 0.1s for each % grade over 3%. But, I guess it could mean add 0.1s for every % over 0%, right?
So, if you had a combo truck on a +5% (up)grade, would it be tg = 10.5 + .1 + .1 = 10.7s; or 10.5 + .1 + .1 + .1 + .1 + .1 = 11.0s?
How do you guys interpret this footnote?
Thanks.