What does red and green light indicate at night?

Answer 1

At night, red and green lights are commonly used in aviation and maritime contexts. For aircraft, a red light is typically the left navigation light, while a green light indicates the right navigation light, helping pilots determine the orientation of other planes. In maritime settings, red and green lights serve a similar purpose for boats, indicating the port (left) and starboard (right) sides, respectively. This color coding aids in safe navigation and collision avoidance in low visibility conditions.