The actual and saturation flows for a $3-$phase signalised intersection are given in

Table $2-1.$ The intergreen period is set at $4$ seconds, the amber time at $3$ seconds

and the lost time due to starting delays at $1\mathrm{.}5$ seconds.

Table $2-1-$ Actual Flows and Saturation Flows for each traffic movement

Calculate the optimum cycle time for the intersection $($Note:

$5$ sum of critical ratios