Horizontal lifelines connect between two anchor points to provide an attachment for a personal fall protection system. Horizontal lifelines can be installed overhead, at foot level, or at any level between. One or more workers attach a lanyard or self-retracting lifeline (SRL) to move freely between anchor points, providing more freedom of movement than a single anchor point. Horizontal lifelines are used when working on beams and concrete walls or near leading edges. They can be set up for temporary use or installed for permanent use and they can be customized for specific locations and tasks.