A light rail route has 2 terminals and 4 intermediate stations. The demand (passengers/hr) for morning peak hour is:
North Terminal Station 1 Station 2 Station 3 Station 4 South Terminal
200 400 200 150 400 550
150 300 1200 300 200 1000
100 400 500 250 250 600
150 500 300 350 150 300
1300 250 500 700 500 1200
where the columns are the trip origins and the rows are the destinations (demand for travel fr om North Terminal to Station 3 is 100 pass/hr; from Station 4 to Station 2 is 250 pass/hr, etc.). Note that these data include both directions of travel. Vehicle capacity is 120 passengers. To meet demand in both directions,
a. Determine the minimum required vehicle frequency
b. Determine the maximum vehicle headway.