[PL / Expert] 15D/16D/19D update: Modernised diesel locomotives

The mid cab diesel locomotives series 15D (standard gauge) and 16D (broad gauge) are manufactured by Newag in Nowy Sącz. These products are the result of deep modernization of TEM2 locomotives from the 70s and 80s. Bogies, frame, and traction motors are re-used,the rest of locomotives is new.