NOVELTY - The railway has a solar panel (5) diagonally installed in a solar panel lock mechanism (4) that is formed in a bottom plate (3). The solar panel converts solar energy into electric power. The electric power generated in the solar panel is supplied to a different apparatus. The bottom plate is supported by an upper end of a column part (1). A street lamp (21) is installed at a lower part of a reinforcing column frame beam (2) or bottom plate. A street light cable (6) is connected to the street lamp. A top-down lane mark beam (24) is provided with a laser or LED lamp.    USE - Solar underground railway.    ADVANTAGE - The railway provides street light and different traffic column facilities and allows a user to place a road guard net during bad weather condition. The railway sets up a solar panel structure in a road and a railroad, so that railroad can be protected from being damaged by a roof due to sunlight. The railway is easy to expand, maintain and design, and ensures safety of the user. The railway avoids occurrence of vehicle collision and maintains establishment of building in the road extension. The railway gathers rainwater on an eaves end of two layer structure during rain and sends the rainwater through the column part by tilting the two layer bottom plate, so that safety of the user can be enhanced. The railway recycles site to the road and the railway section when solar energy generation is performed. The railway utilizes the two layer structure for the solar energy generation and securely places a power line and communication line, a traffic related sensor and a CCTV in a space. The railway allows the user to wash a solar panel and remove snow in designated position. The railway arranges a telephone pole, the street light and traffic related institution columns in a roadside facility, so that aesthetic appearance of city can be conspicuously improved. The railway senses abnormal occurrence of the two layer structure in real-time from remote location, so that safety of the railway can be improved.    DESCRIPTION OF DRAWING(S) - The drawing shows a side view of a solar underground railway.'(Drawing includes non-English language text)'    Column part (1)    Reinforcing column frame beam (2)    Bottom plate (3)    Solar panel lock mechanism (4)    Solar panel (5)    Street light cable (6)    Street lamp (21)    Top-down lane mark beam (24)