A fixed time 2 phase signal is provided at an intersection having a North-South and East-West road where only straight ahead traffic is allowed and no vehicles were seen moving for 2 seconds from any arms of the intersection and time lost during starting delay in each phase was 2 seconds. Total time lost during the cycle (L) is given by the relation L = nl +R where n – number of phases, l – lost time due to starting delay for phase, R – All red time. What will be the optimum cycle length of the signal _______ s

	North	South	East	West
Design hour flow	800	400	750	1000
Saturation flow	2400	2000	3000	3000