Tower lift, tower lift driving method, and machine readable medium

A machine readable medium for storing a program executed by at least one controller, wherein the program includes sets of instructions configured to:

• determine whether travel interference is predicted to occur between a first carriage module and a second carriage module moving in a first direction along a rail module, wherein the first carriage module is ahead of the second carriage module in the first direction, and the first direction is parallel to a vertical direction in which the rail module extends,
• move, in response to the determining of the prediction of the travel interference, the first carriage module from a portion of the rail module to a first rail of the plurality of rails of an interference avoidance module, the first rail being combined with the portion of the rail module;
• move a body of the interference avoidance module in a horizontal direction so that the portion of the rail module is combined with a second rail of the plurality of rails instead of the first rail thereof;
• and
• move, after the second rail being combined with the portion of the rail module, the second carriage module in the first direction along the second rail combined with the portion of the rail module.