Peak traffic detection according to passenger traffic intensity

A control device for controlling at least one elevator, wherein the control device comprises a controller configured to

• detect an arriving traffic intensity, the traffic intensity being a number of passengers arriving at the at least one elevator during a traffic intensity determination period,
• determine a traffic amount value by comparing the traffic intensity to a maximum building population, wherein the maximum building population is a maximum number of people in a building, and
• control the at least one elevator based on the determined traffic amount value,
• wherein the controller is further configured to
• detect persons arriving into the building from entrance floors and persons leaving the building from the entrance floors,
• add the number of detected persons arriving into the building from the entrance floors to a basic building population number,
• subtract the number of detected persons leaving the building from the entrance floors from the basic building population number,
• determine a maximum number of the basic building population number during a building population determination period as the maximum building population, and
• update the maximum building population for each building population determination period.