Next locomotive is WDP 2. It was a new 3100 hp dedicated passenger diesel loco. Twin full-forward cabs, streamlined design, Alco 251-C V-16 power unit, with an AB B/GE turbo supercharger and provided with an electronic governor to control the engine's power output. The first one, #15501, was rolled out in October 1998. Used on KR (e.g., Trivandrum Rajdhani) ,some SR sections (Chennai Egmore - Kanyakumari) and NR. Its rated top speed is 160 km/h (in both directions). Two-stage suspension with Flexicoil Mark IV fabricated bogies (Co-Co). Air-braked. The WDP-2A variant is essentially the same, but with dual brakes. The new class name for these is WDP-3A.
