Which of the following is most nearly the stopping site distance for a roadway with a speed of 40 kilometers/hour (km/h) and a grade of 6%?

Question

Quizplus · Accepted Answer

The stopping sight distance (SSD) for a roadway with a speed of 40 km/h and a grade of 6% is 44 meters. Solution: Use the SSD on grade equation (Metric units) d = 0.278Vt + V²/2.54 ((a/9.81) +6) Where, t = 2.5 seconds a = 3.4/second² V = 40 km/h G = 0.06 d = 0.278 (40) (2.5) + (40)²/2.54((3.4/9.81) + 0.06) = 27.8 + 16.2 = 44 meters

Which of the Following Is Most Nearly the Stopping Site