A Class I two-lane highway is on level terrain with passing permitted throughout. The highway has 11-ft lanes with 4-ft shoulders. There are 16 access points per mile.
The base FFS is 60 mi/h. During the peak hour, 440 vehicles are traveling in the analysis direction and 360 vehicles are traveling in the opposing direction. If the PHF is 0.85 and there are 4% large trucks, 3% buses, and 2% recreational vehicles, what is the level of service?