교통도로 TUNNEL 조명의 이해 (II)

The Understanding of Road TUNNEL Lighting(II)

Until the first stage of the 1990's years, Korean are not concern so much the facilities of traffic tunnel, because of them are the short length and also the quantity of them are not over the several tens in Korea. But, in latest many tunnels has been constructed and are designed in expressway and local national roads. The government office concerned forecast the numbers of tunnel are increased about 300 until the 2003 years, and then we need more interesting about the facilities of tunnel . In the tunnel, the first above of all important facilities is lighting installations which are required much electric energy and continuing maintenance.