In naval vessels, the red and green lights let others know if you're coming or going. If the red is on the left, you're going one way, if it's on the other side, you're going the other.
On the Akira class, STO has them only on the front of the saucer which doesn't make any sense. If you're coming at someone, they'll be able to tell you're coming at them. Away, they'll have no idea. The red and green running lights should be on tips of the hull, one on the port, one on the starboard. Large ones on the top, small ones on the bottom and the rest are white flashers.