What is the purpose of zipper markings on the taxiway?

Zipper markings on a taxiway serve to denote the boundary of the service road. This is important for guiding pilots and ground vehicle operators by clearly defining safe areas to avoid potential conflicts between aircraft and ground vehicles. The visual representation provided by zipper markings helps enhance situational awareness, ensuring that all operations are conducted safely within designated areas.

Other markings found on the taxiway, such as edge lines or centerlines, serve different purposes, such as indicating the edges of the taxiway or guiding aircraft along the center of the path. Therefore, while the answer selected pertains to the purpose of zipper markings, it is essential to recognize that different markings fulfill specific roles in airfield management and safety.