Hi, my name is Matthew Alderson. I am from the USA. I am a professional Fall Protection Partner Expert, and I like to explore new things related to cost effective Fall Protection services. An HLL system is required when a worker must traverse a neighborhood at height, like a narrow roof area near the roof edge or along a sloped roof, while still connected and guarded by a Fall Protection System. The planning of the Horizontal lifeline may be a complex process as loads are applied differently than from one dock point.