Runway markings are essential visual aids on an airport runway that help pilots during takeoff and landing. These markings indicate important information such as runway boundaries, centerlines, and thresholds. They are typically painted in white or yellow and are designed to be easily visible from the cockpit. Different types of runway markings serve specific purposes. For example, threshold markings indicate the beginning of the usable runway, while centerline markings help pilots align their aircraft during landing. Properly maintained runway markings are crucial for ensuring safety and efficiency in aviation operations.