Elevator system including a motorized module

A method of controlling movement of a cab in an elevator system, the cab being configured to accommodate at least one passenger or item inside the cab, the method comprising:

• selectively connecting a motorized module to the cab;
• and
• moving the cab by causing movement of the motorized module while the motorized module is connected to the cab,
• wherein
• the motorized module includes
• a base;
• at least one connector supported on the base, the at least one connector being configured to selectively establish a releasable connection between the motorized module and the cab,
• at least one drive member supported by the base, the at least one drive member being configured to
• engage a vertical surface,
• climb along the vertical surface to selectively cause vertical movement of the base, and
• selectively prevent movement of the base when the at least one drive member remains in a selected position relative to the vertical surface;
• and
• at least one motor associated with the at least one drive member to selectively cause the at least one drive member to climb along the vertical surface,
• and wherein the motorized module is vertically moveable independent of the cab.