What primary color signifies taxiway markings?

Taxiway markings are primarily signified by the color yellow. This color is used universally in airport operations to provide clear and distinct guidance to pilots and vehicle operators navigating the airside areas. Yellow markings help to indicate the boundaries of taxiways, along with directional and informational signs, which are crucial for maintaining safety and efficient traffic flow on the airport surface. The use of yellow for taxiway markings ensures that these critical navigational aids are easily identifiable under various lighting conditions and weather situations. The choice of color is standardized by the International Civil Aviation Organization (ICAO) to maintain consistency across airports globally, further supporting safe airside operations.