The Vancouver port is a transportation hub that transfers shipping containers from trucks coming from western seaports to rail cars for shipment to eastern destinations. Containers arrive at the ports at the rate of nine per hour. It takes 25 minutes (exponentially distributed) for a crane to unload a container from a truck, place it on a flatbed rail car, and secure it. Suggest a waiting line system that will effectively handle this level of container traffic at the inland port.