Given a data on a two-way, two-lane highway 9km long on a rolling terrain are as follows: Volume = 1500 veh/hr (two way); PT = 14%; PRV
= 4%; peak 10 minute volume = 315 vehicles. Percent no passing is 50% for a 50-50 directional split. Determine the LEVEL of service using available data on both class I and II.