What is the standard angle of inclination for most escalators?

The standard angle of inclination for most escalators is commonly set at 30 degrees. This angle has been determined to strike a balance between efficiency in transport and user comfort. At 30 degrees, escalators can provide a safe and accessible means of transporting people between different elevations while maintaining a reasonable speed and reducing the chances of falls.

This angle aligns with safety standards and building codes, which aim to ensure that escalators can be used effectively by a wide range of individuals, including those with mobility challenges. A 30-degree incline allows for effective interaction with handrails and minimizes the physical strain on users, making it the most widely accepted inclination for escalators in various environments, including retail, airports, and public transport facilities.

In contrast, other angles presented in the choices tend to either be less practical for general usage or are specific to particular types of escalators or applications.