When designing emergency egress for persons with disabilities, what is the primary consideration that often necessitates dedicated, separate provisions beyond standard ramp access?

The primary consideration necessitating dedicated, separate provisions beyond standard ramp access for emergency egress for persons with disabilities is the impracticality and inherent danger of relying on standard emergency egress routes (stairs) and the unsuitability of ramps for rapid, vertical evacuation in multi-story buildings during an emergency when elevators are typically unavailable. In multi-story buildings, the primary means of emergency egress is stairwells. During emergencies such as fires, elevators are typically recalled to a designated floor and shut down to prevent their use and to ensure the safety of occupants, meaning they cannot be used for g....