Class II two-lane highway needs to be redesigned for an area with
rolling terrain. There are 380 vehicles traveling in the analysis
direction and 300 vehicles are traveling in the opposing direction.
The PHF is 0.92. The traffic stream includes 8% large trucks, 2%
buses and no recreational vehicles. What is the maximum percentage
of no- passing zones effect (fnp) that can be built into the design
with LOS D maintained?
using vp= V/PHF • fg • fhv
NOT vp= V/ PHF •N• fhv