$\backslash$table$[[$Parameter$,$N$-$S Approaches,E$-$W Approaches$],[$Number of $12$ ft lanes on each approach,$3,2],[$Design speed, $m\frac{i}{h},50,40],[$Median width, ft$,16,12],[$Grade $(\%),0,3]]$

Question $2(25$ Points$)$

Determine the minimum green times for each approach in Question $1$ if the effective crosswalk width in each direction is $8$ ft and the number of pedestrians crossing during an interval is $30$ in the $E-W$ direction and $25$ in the N$-$S direction.