How should comb teeth be positioned in relation to the step treads?

The correct positioning of comb teeth in relation to step treads is crucial for ensuring safe and efficient operation of the escalator. When comb teeth are centered and below the step treads, it allows for a smooth transition as passengers step on and off the escalator. This positioning helps to minimize the risk of tripping hazards and maximizes safety by ensuring that the comb teeth effectively engage with the step treads as they move into position.

This design is important because it provides a clear and secure alignment when individuals use the escalator, helping to guide their feet onto the step while minimizing the gap between the step and the comb teeth. Additionally, positioning the comb teeth in this manner allows for proper functioning of the escalator mechanism without unnecessary wear or misalignment, supporting the longevity and reliability of the equipment.

Alternative configurations, such as offset or positioned above the tread, could lead to increased risk of accidents or malfunction, making the correct option essential for both safety and mechanical integrity.