SMCGS go into effect at what RVR value?

SMCGS go into effect at what RVR value?

• A. 1200 RVR
• B. 1000 RVR
• C. 1500 RVR
• D. 2000 RVR

Answer: (A)

Surface Movement Guidance and Control System activation is tied to how far you can see along the runway. When runway visual range drops to 1200 feet, the system goes into effect to provide enhanced guidance, coordinated taxi routes, and additional lighting and procedures that help keep aircraft and ground vehicles safe in reduced visibility. This threshold is chosen because it signals a clear drop in visibility strong enough to warrant those extra safety measures, but not so severe that the most extreme restrictions are always required. The other values imply different levels of visibility or correspond to other procedures. A lower value would mean even worse visibility and often triggers more stringent rules, while higher values reflect better visibility where full SMCGS isn’t needed.

Surface Movement Guidance and Control System activation is tied to how far you can see along the runway. When runway visual range drops to 1200 feet, the system goes into effect to provide enhanced guidance, coordinated taxi routes, and additional lighting and procedures that help keep aircraft and ground vehicles safe in reduced visibility. This threshold is chosen because it signals a clear drop in visibility strong enough to warrant those extra safety measures, but not so severe that the most extreme restrictions are always required.

The other values imply different levels of visibility or correspond to other procedures. A lower value would mean even worse visibility and often triggers more stringent rules, while higher values reflect better visibility where full SMCGS isn’t needed.