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Airport lighting system9/26/2023 Runway Guard Lights: Pilots need a clearance to cross and must use caution. This system is really helpful during low visibility conditions. In addition to the dual flashing units, wig-wags are often installed in-ground, on the runway hold-short line. It’s a lot easier to say “Hey captain, are you blind? The wig-wags are right there!“ Pilots rarely refer to the lights as “Runway Guard lights.” We call them “Wig-Wags.” The red color reminds pilots not to proceed without permission from an air traffic controller. Red signs ( 31R) always indicate a runway. A yellow background with black characters ( A4) identifies a crossing taxiway. A black background with yellow characters ( A3) identifies what taxiway the aircraft is on. Yellow and black signs identify taxiways. Taxiway SignsĪlthough not technically airport lights, taxiway signs are well illuminated and easy to see. The system is amazing and one reason I enjoy flying to Changi. “KLM 836, Taxi runway two zero center via Uniform one, Victor Zulu, Whiskey Alpha, North Cross Three, Alpha Seven, Alpha One, Echo One.” Whew! ![]() ![]() Without Safegate, a typical taxi clearance at Changi might be: The pilot simply follows the lights to the runway. The green lights can be seen day and night. The Safegate system illuminates the green centerline lights in front of the aircraft as it taxis, providing custom guidance from gate to runway. To make taxiing easier (and safer), Changi’s green centerline lights are controlled by an automated guidance system developed by Safegate Group. Singapore’s Changi International Airport has taken green centerline taxi lights one step further. Safegate Ground Lighting Control & Monitoring System
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