Q $1$: An intersection has a four$-$phase signal with the movements allowed in each phase and corresponding analysis and saturation flow rates shown below. Calculate the sum of the flow ratios for the critical lane groups.

$\backslash$table$[[$Phase$,1,2,3,4],[$Allowed movements,EB L$,$ WB L$,$EB T$/$R$,$ WB T$/$R$,$SB L$,$ SB T$/$R$,$NB L$,$ NB T$/$R$],[$Analysis flow rate,$245,230ve\frac{h}{h},975,1030ve\frac{h}{h},255,235ve\frac{h}{h},225,215ve\frac{h}{h}$