What defines the brightness of landing lights in comparison to other lights?

Landing lights are specifically designed to provide high-intensity illumination to the runway and its surroundings during takeoff and landing phases of flight. Their primary purpose is to enhance visibility for pilots, allowing them to clearly see the runway environment, including potential obstacles and other aircraft, especially during night operations or adverse weather conditions.

This high brightness is essential since it aids in improving safety by ensuring that the pilots can judge their approach accurately. Unlike other lights on the aircraft, which may serve different functions such as navigation or internal cabin lighting, landing lights focus on delivering a concentrated beam of light that illuminates the area directly in front of the aircraft. Thus, they are recognized as the brightest lights on the aircraft to fulfill their critical role in landing and takeoff procedures.