The Coast Tram is a light rail service connecting the cities and towns along the Belgian coast between De Panne, near the French border, and Knokke-Heist, near the Dutch border. At 67 kilometres (42 mi) in length, it is currently the world's longest metre gauge tram line, and the second-longest light rail service in the world after the A Line of the Los Angeles Metro Rail system, as well as one of the few interurban tramways in the world to remain in operation. The line is fully electrified at 600 V DC.