A hazardous material spill on Interstate I-76 caused theeastbound traffic 20-minute delay. Traffic flow is completely shutdown on a three-lane section creating a jam density of 160vpm/lane.If the arriving flow on this roadway section is 3300vph at adensity of 35 vpm/lane, determine the following:
a) the total number of vehicles in the queue and the queuelength (miles) after 20 minutes.
b) spacing (in ft/Veh) between vehicles in the jammedtraffic.
c) if the roadway is re-opened after 20 minutes and thereleasing flow at the bottleneck is 1800vph/lane at a density of60vpm/lane, how long will it take for the releasing wave (movingupstream from the bottleneck) to catch up with the jam densityshockwave?
