Problem $8-$C:

A traffic signal control is being designed for a four$-$leg intersection on a divided highway with the characteristics:

$\backslash$table$[[,$NB$,$SB$,$EB$,$WB$],[$Median Width $($ft$),16,16,12,12],[$Number of $12-$ft$.$ Lanes,$3,3,2,2],[$Design speed, mph$,50,50,40,40],[$Grade$,0,0,3\%,3\%$