and no waiting for a service. However, if more
passengers arrive, the queue may begin to grow and if
the rate of arrivals stays higher than the service rate, the
queue can keep growing and the service level can decline
because of the increase in waiting time and crowding.
Many services inside the airport building can be
modeled by queuing theory. Some hypothesis about
the components of the process is required.
Assume that there is a single ticket counter handled
by one agent. The ticket counter has a 60m2 queue
waiting area and is equipped to handle baggage and full
ticketing of passengers. Let us suppose that passengers
arrive alone at the counter area so that only passengers
with a few pieces of luggage are keeping queue. The
number of passengers who arrive to require service is
infinite1 and the first to arrive are the first to leave. The
mechanism is shown in Fig. 1.