(Solved): step by step please  A 4-lane undivided multilane highway in a suburban area has the following ...

A 4-lane undivided multilane highway in a suburban area has the following characteristics: posted speed limit \( =50 \) \( \mathrm{mi} / \mathrm{h} ; 11 \mathrm{ft} \) lanes; frequent obstructions located \( 4 \mathrm{ft} \) from the right pavement edge; 30 access points/mi on the right side of the facility. What is the free-flow speed for the direction described?