Visual Flight Rules (VFR) are regulations under which a pilot operates an aircraft in weather conditions generally clear enough to allow for visual navigation. Pilots flying under VFR must see the ground and other aircraft to maintain safe distances and avoid collisions. This method relies on the pilot's ability to navigate using visual references rather than relying solely on instruments. VFR is commonly used for general aviation flights, where pilots can fly by sight during good weather. However, pilots must still adhere to specific altitude and distance requirements from clouds to ensure safety while flying visually.