$\frac{?}{?}$Determine the desirable cycle length for the intersection shown below $(7pts.$ The intersection is designed to have the following three phases:

Phase A: left$-$turn movements from the East and West Bound approaches;

Phase B: through and right movements from East and West Bound approaches;

Phase C: all movements from the North and South Bound approaches.

Assume that each intersection approach has three lanes, one for the left$-$turning vehicles, one for the through vehicles, and one for the right$-$turn vehicles. The saturation discharge headway is equal to $2\mathrm{.}1$ seconds, the lots time$/$phase is $3\mathrm{.}5s,$ the peak hour factor is $0\mathrm{.}92$ and the volume$-$to$-$capacity ratio does not exceed $0\mathrm{.}85.$