What do continuous runway markings indicate?

Continuous runway markings primarily indicate the edges of the runway. These markings help pilots identify the usable width of the runway and maintain proper alignment during takeoff, landing, and taxiing. The clear delineation of the runway edges is crucial for ensuring safety and spatial awareness, especially in low visibility conditions.

While the other choices contain important aspects of runway operations, they do not pertain to the specific function of continuous markings. For instance, runway entry points are typically indicated by different markings that direct pilots to the threshold of the runway. Aeronautical information may be conveyed through signage or lighting rather than continuous markings, and runway length information is usually provided in charts or signage for pilot reference, not through the continuous edge markings themselves.