Consider a 4 lane freeway that normally has a capacity of 8000 veh/hr. The demand on the freeway is 7000 veh/hr. An incident shuts down one of the lanes for 30 minutes and reduces the capacity to 6000 veh/hr. Afterwards, the capacity returns to 8000 veh/hr. There is a parallel arterial street with a capacity of 1500 veh/hr. Freeway traffic can divert and use the arterial. However, there is already ademandof 1000 veh/hron the arterial. Calculate and compare the total delay (arterial and freeway combined) for the following two scenarios and comment on the differences:a.1000 veh/hr divert from the freeway to the arterial during the 30 minute incidentb.500 veh/hr divert from the freeway to the arterial during the 30 minute incident