Method for operating a lift system, and lift system

A method for operating an elevator system that includes a shaft system and elevator cars that are moved separately from one another between floors in a circulation operation, the method comprising:

• moving the elevator cars upward in a first shaft;
• moving the elevator cars downward in a second shaft;
• and
• synchronizing movement of the elevator cars with respect to defined shaft positions that the elevator cars are configured to adopt, wherein a quantity of the defined shaft positions is equal to or greater than a quantity of the elevator cars.

An elevator system comprising:

• a shaft system with a first shaft and a second shaft;
• elevator cars that move circulate in the shaft system, wherein the elevator cars move upward in the first shaft and downward in the second shaft;
• and
• a control device for controlling movement of the elevator cars in the shaft system, wherein the control device is configured to synchronize movement of the elevator cars with respect to defined shaft positions that the elevator cars are configured to adopt, wherein a quantity of the defined shaft positions is equal to or greater than a quantity of the elevator cars.