What is the primary purpose of Vehicle Service Road markings, including zipper markings?

• A. They identify pathways for vehicles crossing areas intended for aircraft use
• B. These roadway markings alert drivers when they are crossing active taxiways and emphasize the need to use caution for moving aircraft
• C. They indicate fuel locations
• D. They designate pedestrian zones

Answer: (B)

The main idea is safety around aircraft on movement areas. Vehicle Service Road markings, including zipper markings, are there to make you aware that you’re near or crossing taxiways where aircraft may be moving. This prompts you to slow down, look carefully, and yield to any approaching aircraft. The zipper markings provide a clear, high-visibility boundary between the service road and the taxiway so you can recognize when you’re entering or crossing an active area and understand the need for caution. They aren’t about locating fuel locations or marking pedestrian zones, which involve different signs and markings.