What is required for the 5/5/5 standard at DFW Airport?

The 5/5/5 standard at DFW Airport refers to specific requirements for operations based on visibility and lighting. This standard is particularly focused on ensuring that the necessary visual aids and equipment are functioning properly to guarantee safe air traffic operations.

The correct choice indicates that both the Center Line (CL) and High-Intensity Runway Lighting (HIRL) must be operative. This is crucial because these lighting systems assist pilots in visually navigating the runway during takeoff and landing, particularly in conditions with reduced visibility. Ensuring that these systems are operational contributes significantly to achieving the safety and efficiency objectives of airport operations, which aligns with the 5/5/5 standard requirements.

In contrast, while having two pilots with IFR ratings, clear weather conditions, and a passenger safety briefing are all important aspects of aviation safety and regulation, they do not specifically pertain to what is mandated under the 5/5/5 standard at DFW Airport. Thus, the focus on operational lighting systems is vital to understanding and adhering to the safety protocols at the airport.