What is the main safety purpose of airfield signs and markings like taxiway centerlines?

• A. They indicate weather conditions
• B. They are decorative
• C. They guide taxiing aircraft and vehicles to prevent incursions and collisions
• D. They designate fuel types

Answer: (C)

Airfield signs and markings provide the function of guiding pilots and ground vehicles along defined paths on the airfield to prevent incursions and collisions. Taxiway centerlines mark the intended path along the taxiway, helping you stay centered and follow the correct route between runways, aprons, and parking areas. This consistent guidance reduces the risk of wandering into a active runway, crossing paths with other aircraft or vehicles, or entering restricted zones, which is crucial for safe ground operations, especially in busy or low-visibility conditions. Signs that indicate location, direction, and hold-short points further support safe taxiing by giving clear, unambiguous information about where you are and where you need to go. Choices that focus on weather, decoration, or fuel designations don’t serve this navigational safety purpose.