$3-(25$ pts$)$ A section of Border Highway is a BFS$.$ In each direction of travel, there are three lanes: two non$-$toll lanes on the right plus a toll lane on the left. All the lanes have a $12-$ft lane width. The right shoulder width is $6\mathrm{.}0$ ft $.$ The TRD is $0\mathrm{.}30$ per mile. What is the FFS of the nontoll lanes $($round to the nearest one mph $)?$

During the same hour, of all the vehicles counted, there were $1\mathrm{.}4\%$ trucks. What is the value of $f_{HV}?$ Assume level terrain.

The two non$-$toll lanes have a volume of $1640ve\frac{h}{h}.$ Assume the PHF is $0\mathrm{.}863.$ Calculate $v_p$ and then determine the LOS of the two non$-$toll lanes. Ignore the left shoulder.

Since no vehicle is using the toll lane, the transportation authority wants to convert the toll lane to a non$-$toll lane. Determine the new LOS.