Problem $2).$ A two$-$lane rural highway carries a peak hour volume of $585($vph$)$ and has the following

characteristics:

Roadway: $60$ mph design; $10$ foot lanes, $4$ foot shoulders; rolling terrain; $40\%$ no$-$passing zones; length $=3$

miles.

Traffic: $60/40$ directional split; $5\%$ trucks; $1$ percent recreational vehicles; $2$ percent buses; PHF $=0\mathrm{.}91$

a$)$ What Level of Service will the highway operate under during peak periods?

b$)$ What is the capacity of the highway? Explain why this is less than $2,800($vph$)?$