NIKE
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- Jul 13, 2013
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Hey All:
So the AASHTO Stopping Sight Distance eqn for us customary units is S = (1.47 * tp * v) + (v^2 / 30 * (f + G))
Something feels wrong about using the same equation to estimate the stopping distance of a Prius that you would for a semi truck. I understand that mass cancels out in the derivation of this equation, but I cant wrap my head around how you can accurately estimate stopping sight distance without considering mass. What am i missing?
BTW, I will never remember this as "Stopping Sight Distance". Ever since college its been "Sight Stopping Distance"... Maybe that means im dyslexic.
So the AASHTO Stopping Sight Distance eqn for us customary units is S = (1.47 * tp * v) + (v^2 / 30 * (f + G))
Something feels wrong about using the same equation to estimate the stopping distance of a Prius that you would for a semi truck. I understand that mass cancels out in the derivation of this equation, but I cant wrap my head around how you can accurately estimate stopping sight distance without considering mass. What am i missing?
BTW, I will never remember this as "Stopping Sight Distance". Ever since college its been "Sight Stopping Distance"... Maybe that means im dyslexic.