Q$1)$ An intersection has a three$-$phase signal with the movements allowed in each phase and corresponding analysis and saturation flow rates shown in Table $7\mathrm{.}6.$ Calculate the sum of the flow ratios for the critical lane groups and the required cycle length.

Table $7\mathrm{.}6$ Data for Problem $7\mathrm{.}1$

$\backslash$table$[[$Phase$,1,2,3,],[$Allowed movements,NB L$,$ SB L$,$NB T$/$R$,$ SB T$/$R$,$EB L$,$ WB L$,$EB T$/$R$,$ WB T$/$R$],[$Analysis flow rate,$330,365ve\frac{h}{h},1125,1075ve\frac{h}{h},110,80ve\frac{h}{h},250,285ve\frac{h}{h}$