How are runway centre lines indicated?

Runway centre lines are indicated by broken white lines. This visual cue serves a critical function in aviation as it helps pilots clearly identify the centerline of the runway during takeoff and landing operations. The broken white lines are designed to enhance visibility, particularly in conditions with poor light or inclement weather, allowing pilots to maintain proper alignment with the runway. The use of broken lines also signifies the area where the runway is in use, guiding pilots safely onto and along the runway.

Other possible options, such as solid green lines, dashed red lines, or continuous yellow lines, serve different purposes in airport markings but do not represent the runway centre line specifically. For instance, solid green lines might indicate certain taxiway boundaries or movement areas, while yellow lines are commonly used for holding positions and taxiway markings. Understanding these distinctions is crucial for operating safely at an airport.