Shanghai Electric Powers Trial Operations for China's First Digital Rail-guided Tram SHANGHAI, February, 1. /PRNewswire/. Trial operations officially commenced for the Shanghai Pilot Free Trade Zone T1 Demonstration Line in the Lin-gang New Area. As one of the companies involved in the construction of the T1 Demonstration Line, Shanghai Electric Automation Group, a member of Shanghai Electric Group Company Limited, developed China's first intelligent digital-rail transport system ("iDRT") for the digital rail-guided rubber-tired tram ("DRT") used on the line. Shanghai Electric supplied the digital track, operation management system, network communications system, communications backbone, intelligent platform system and control center for the demonstration line; as well as managing the supply, installation and other services related to electromechanical systems.