Queueing systems are simple mathematical models that explain congestion. A queueing system arises when ‘customers’ demand ‘service’ from some facility; typically, both the arrival of the customers and the service hours are supposed to be random. If all of the’ servers’ are full when new clients arrive, they will typically wait in line for the next available server.
The queue management system has been in place for decades. Most queue management systems are now ticket-based; clients grab a ticket when they enter a bank, post office, telecommunications store, etc., and move to the service counter when called; there is no longer a physical lineup. With this improved service system, the penetration rate of queue management systems has reached 100% in some industries/countries; it is a must-have system in these locations.