Lifeline

Lifeline: In fall protection a lifeline is a component consisting of a flexible line connected vertically to an anchorage at one end (vertical lifeline), or connected horizontally to anchorages at both ends (horizontal lifeline), and which serves as a means for connecting other components of a personal fall arrest system to the anchorage. SOURCE: OSHA

Lifelines are a key component in fall protection.

Lifeline
A Lifeline in use.