Control and stopping
Assess the user's ability to control speed, stop, wait, and avoid others in the actual setting.
Safety analysis
Direct threat requires actual risk
Safety review should be evidence-based, narrow, and tied to the specific environment.
What to evaluate
Direct threat analysis should be based on actual safety risk, not stereotypes about unfamiliar mobility devices. The analysis should consider speed, control, environment, crowding, platform edges, vehicle boarding, indoor concourses, sidewalks, waiting areas, and available mitigation.
Environment
Separate platforms, rail vehicles, concourses, sidewalks, lobbies, waiting areas, and boarding zones.
Mitigation
Consider narrow rules such as walking speed, off-peak use, dismount zones, or alternative routes before categorical bans.
Do / Do not
Do
Identify the specific setting, actual risk, available mitigation, and whether a narrower rule would preserve access.
Do not
Use unfamiliar appearance, recreation assumptions, or generalized discomfort as a substitute for actual safety facts.
Restrictions should be narrow and environment-specific where possible. A risk found on a platform edge does not automatically answer whether the same mobility aid can be used in a concourse, sidewalk, or waiting area.