Germany, Sept. 24 -- Semi-automated test runs with subway prototype for the Digital Train Control System Frankfurt Over the past year, a metro prototype has been running on the test ring of the central urban train depot managed by the Frankfurt Transport Company (VGF). The tests are for one of the most important digitalization projects in Frankfurt am Main: the "Digital Train Control System Frankfurt" or DTC. The prototype, a converted "U5" type train, communicates continuously with the infrastructure in order to operate more quickly and efficiently. The tests are at "Grade of Automation 2" (GoA2) level, in which trains run partially automated yet require driver supervision. Optimally Connected, Faster, More Reliable: VGF and Siemens Mobili...