An incident occurs on a freeway that has a capacity in the northbound direction, before the incident, of 4000 veh/h and a constant flow of 2900 veh/h during the morning commute. ( no adjustments to traffic flow result from the incident) at 8:00 am a traffic accident closes the freeway to all traffic. at 8:12 am the freeway is partially opened with a capacity of 2000 veh/h. Finally, the wreckage is removed, and the freeway is restored to full capacity (4000 veh/h) at 8:31 am.
a.) Draw a queue diagram representing the traffic flow starting at 8 am
b.) Determine the time of queue dissipation
c.) Determine the longest queue length
d.) Determine the longest wait of any vehicle
e.) Determine the total delay
f.) Determine the average delay per vehicle