Ledline®; is an extremely tough, submersible, corrosion proof, chemically resistant, induction or dc powered, (can be computer controllable), sunlight visible, linear, led lighting and guidance system, for improved airport, helipad and road safety and efficiency. Ledlineâ® is used for in-pavement applications improving the guidance and safety of roads, airfields and helipads, for lighting for the marine, mining and military applications, improving safety, survivability and efficiency, by providing guidance and lighting anywhere!