Which of these is NOT a primary function of elevator guide shoes?

Elevator guide shoes primarily serve several essential functions to ensure the safe and efficient operation of elevators. One of their main roles is to provide lateral support, which keeps the elevator car aligned within the shaft and prevents unwanted movement, enhancing overall stability. Additionally, guide shoes help in reducing swaying and other forms of unwanted motion, particularly during the elevator's travel, contributing to passenger comfort and safety.

The maintenance of safety features is also an inherent function of guide shoes. They ensure that the elevator operates smoothly and safely within the vertical shaft by minimizing wear and tear, which can lead to malfunctions.

However, enhancing the speed of operation is not a function performed by guide shoes. While guide shoes do contribute to the elevator's efficiency by facilitating smooth movement, their design and purpose do not directly impact how fast an elevator travels. Instead, the speed of an elevator is primarily determined by the motor and the control system, making the idea that guide shoes increase speed an incorrect association.