NEW RULE: post the name of the standard as well as the number. thanks.

Title : Warning; Unstable cliff edge
Function/description : To warn of a hazard from unstable cliffs or cliff edges.
Image content :Human figure falling, edge of land mass, vertical line of three irregularly shaped dots
Hazard : Falling off cliff.
Human behaviour that is intended to be caused after understanding the safety sign's meaning : Taking care to avoid cliff edges
Application rules : This safety sign contains a specific safety colour that shall conform with ISO 3864-1 and ISO 3868-4.