Application field : navigation aids for boat , barge,marine aids .
Navigation lighting systems include:
Right-of-way lights — A red light is mounted on the left or port side of the craft and a green on the right or starboard side. In a situation where the paths of two watercraft or aircraft cross, these lights help each crew determine the other craft's direction and who has right-of-way. When two craft have crossing paths, each sees a red or green running light. The craft on the port side, which must yield right of way, sees the red light on the other, while the craft on the starboard side, which has right of way, sees the green on the other.
Strobe lights — On aircraft primarily, strobe lights flash a high-intensity burst of white light, to help other pilots recognize the aircraft's position in low-visibility conditions.