Threshold lights are specialized lighting fixtures used primarily in aviation to enhance safety during takeoff and landing. They are typically installed at the edges of runways and taxiways, providing visual guidance to pilots. These lights help indicate the boundaries of the runway, especially in low visibility conditions. In addition to aviation, threshold lights can also be found in other areas, such as maritime navigation and roadway safety. They serve a similar purpose by marking important boundaries and guiding vehicles or vessels safely. Their bright illumination is crucial for preventing accidents and ensuring smooth operations in various environments.