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A traffic signal has a 90-second cycle length. For the travel direction of interest, the red...

A traffic signal has a 90-second cycle length. For the travel direction of interest, the red and green times are 30 seconds and 60 seconds, respectively, the arrival rate is constant at 30 veh/min and the saturation flow (i.e., the queue discharge rate) is 1 veh/sec.Calculate the total delay [veh.s] for the travel direction of interest. What is the maximum queue size [veh]?

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