This would minimize the problem of poor or snow-obscured airport markings. They indicated our first hold point and appeared to form a physical barrier across the taxiway, reinforcing the pilot's decision to stop. The latter term also is used if the pilot wanders from his cleared taxi path. As I continued my taxi tour of the pseudo-airport and its ramps, I could see how SGS could help pilots more safely and efficiently navigate the myriad taxiways at an unfamiliar or busy major airport, especially at night. Overall, I found the SGS symbology simple and intuitive to use, and quickly adapted to its guidance cues.
Degraded visibility is another major cause of incursions.
The weather lifted and I completed the preprogrammed circuit to the opposite end of the runway under clear conditions. As we neared the threshold, the system received a takeoff clearance and I rolled onto the active. Resetting the simulator, Pitchford demonstrated other SGS features. This perspective is characterized by 3D-appearing taxiway edge cones. A distinctive triangle, indicating the aircraft's nose and main gear position on the taxiway, also surrounds the aircraft ground reference symbol.