What is the safety requirement for the footrest height on an escalator or moving walk?

• A. It must not exceed the specified height.
• B. It must be adjustable to any height.
• C. It must be exactly the specified height.
• D. It must be twice the specified height.

Answer: (A)

The key idea is that the footrest height is limited by a maximum specification. Keeping the footrest from being higher than that specified value ensures riders place their feet on a consistent, safe surface that lines up with the step edge and the comb plate. If the footrest could be higher, a rider’s foot might not sit properly, increasing the chance of missteps, entrapment, or loss of balance as the escalator or moving walk moves. The standard sets a definite maximum to maintain predictable footing and clearances throughout the length of the ride.

That’s why the best rule is that the footrest height must not exceed the specified height. It’s not about being adjustable to any height or being exactly the height, and it certainly isn’t about doubling it—the point is to stay within a defined safe limit.