Once the basic framework of an FRMS is defined and critical focus areas are determined, we can begin to develop the specific countermeasures. These countermeasures fall into a handful of layers of protection.
The key layers of protection we use within Caterpillar are Culture, Polices & Procedures, Training & Education, Schedules & Rosters, and Technology. While the FRMS you defined and created prior to the develop phase will likely include all of these areas, the task in the Develop stage is to clearly design the programs and fatigue countermeasures within each of those layers.