Patent ID: 8132652

Claim:
An elevator system, comprising: at least one shuttle elevator, which serves at least one transfer level, which transfer level comprises at least one transfer floor; at least two local elevators, elevator cars of which are arranged to travel in a same elevator hoistway such that the aforementioned elevator cars can serve at least one shared transfer floor of the aforementioned transfer level; at least one destination call appliance; a control system, which is arranged to receive destination calls given from the destination call appliance, to form a plurality of route alternatives according to the destination call from a departure floor to a destination floor, and to allocate the destination call to one or more elevators by selecting a best route alternative on the basis of a given optimization criterion, wherein when allocating the destination call the control system is arranged to take into account that the elevator cars of the local elevators that travel in a same elevator hoistway cannot simultaneously be at an aforementioned shared transfer floor in cases in which the route alternative comprises a part-trip with a local elevator and a change of elevator at the aforementioned shared transfer floor.