Assertion: rail | /r/HasProperty | critical safety feature
Facets:
value: on outdoor and indoor stairs
type: LOCATION
Source sentences:
text: Railings in all of these categories are a critical safety feature on outdoor and indoor stairs, and ramps, both as graspable handrails to guide a user or to protect against a stair-fall, and as are guardrails along stairs, landings, platforms, decks, porches, and similar structures.