Why are wider step sizes important for escalators serving the elderly or disabled?

Wider step sizes are vital for escalators that accommodate elderly or disabled individuals because they facilitate easier access and enhance stability while using the escalator. This design consideration helps ensure that users have enough surface area to place their feet securely on each step, reducing the risk of slipping or misstepping.

For elderly individuals or those with mobility challenges, being able to navigate steps comfortably without feeling cramped is crucial. It allows them to enter and exit the escalator more confidently and safely. Additionally, wider step sizes contribute to a more welcoming experience for users who may need extra time or assistance in balancing. This attention to design can significantly improve overall safety and usability for a population that may be more vulnerable to accidents.

The other options, such as reducing load, increasing costs, or improving energy efficiency, do not directly address the challenges faced by these specific groups when using escalators, thereby making them less relevant in this context.