Navigation lights refer to a set of signal lights installed on an aircraft to determine the direction of flight for mutual detection by air traffic during flight. It is stipulated that the aircraft should be equipped with navigation lights on its two wing tips, and the left wing tip should have a red light and the right wing tip should have a green light. Traditionally, it also includes the installation of white lights at the tail end of aircraft. During flight, it must be engaged. Navigation lights are used to detect and determine the direction of taxiing on the ground at night, and to determine the spacing to prevent wing tip collisions. General regulations: Install red lights on the left wing tip of the aircraft, green lights on the right wing tip, and white lights on the tail wing end; A red light is installed on the left side of the helicopter fuselage, a green light is installed on the right side, a white light is installed at the tail end, and a red light is installed at the rotor tip. Install red lights on the port side of the ship, green lights on the starboard side, and white lights on the mast and stern; Installing side lights on non motorized vessels; The wooden sailboat is only equipped with a white light