One intersection located in Delhi has two roads crossing each other approximately at $90$ degree buh the

are left channelized. The last traffic signal design at this location was carried out a decade agy this iniersechich

has been experiencing unusually large number of angle and head$-$on accidents involving right furning verhichess

in the middle of intersection for the last $3$ years. Delhi Govt has approached you to redesign the signal A stuch

conducted by you at the site provides the traffic volume $($in vph$)$ along each approaches which is presented as

follows:

Given data:

PHF $=0\mathrm{.}95$

Saturation flow for right turn traffic $=1600$ vphgpl

Saturation flow for through traffic $=1900$ vphgpl

Saturation flow for though plus left shared traffic $=1800vphgpl$

Show the tentative phasing scheme to be adopted for the intersection. Estimate critical flow ratios for sach phase

Solve it using webster method