Which color is used for primary taxiway markings?

Primary taxiway markings are designated in yellow. This color is used because it is highly visible against the airport's surface and contrasts well with the background, helping pilots easily identify taxiways during both day and night operations. Yellow markings indicate areas where aircraft should taxi, ensuring safe and efficient movement on the airfield. This standardization across airports enhances situational awareness for pilots and reduces the likelihood of runway incursions or miscommunication regarding taxi routes.

Other colors have different meanings and applications within airport signage and marking systems. For example, red typically indicates a prohibited area or no entry zones, white is commonly used for runway markings, and green is often associated with airport lighting. These distinctions are crucial for maintaining safe operations and strict adherence to aviation protocols.