What is the minimum width of escalators?

The minimum width of escalators is established to ensure safety and accessibility for all users. A width of 22 inches is typically regarded as the minimum standard because it allows sufficient space for passengers to comfortably stand without feeling cramped, and it accommodates individuals with mobility devices, such as wheelchairs or walkers. This width helps in maintaining a smooth flow of traffic during peak usage times and reduces the risk of accidents or falls.

Standards set by organizations such as the American National Standards Institute (ANSI) and the National Fire Protection Association (NFPA) support such minimum requirements, ensuring that escalators provide a safe environment for a diverse range of users. This standard also takes into account the need for emergency situations where passengers may need to evacuate quickly.

A width less than 22 inches would not meet the necessary safety standards and would likely compromise the functionality of the escalator, making it less accessible and potentially posing hazards in crowded conditions. Therefore, the provided answer aligns with the safety regulations and industry standards adhered to in Massachusetts and many other jurisdictions.