If a train is being unloaded when its crew leaves unloading is suspended until a replacement crew arrives. If a train is in queue when its crew s time expires the train cannot leave the queue until the replacement crew arrives. The unloading equipment can be idle with trains in the queue. The trains arrive around the clock and the crew shifts start at 8am. Consider a car rental system shown in the figure prob5 figure .
Distances are in miles.
There is one bus with capacity 20 and max speed of 30mph. The bus is initially at location 3 and leaves immediately in counterclockwise direction. All people arriving at a terminal want to go to the car rental. All people arriving at the car rental want to go to the terminals with respective probabilities 0.583 and 0.417. The bus always spends at least 5 minutes at each location.