Despite the introduction of more modern types of locomotives such as the WDG-4, and electrification, a significant number are still in use, both in mainline and departmental duties. As of April 2022, 44 locomotives still retain "operational status" on the mainline.
The WDP-1 is a lower powered version of the WDM-2. These locos have a 2300 hp powerpack, . The engine is a converted version of the Alco 251C model with a 12-cylinder engine and low overall weight with a max. speed of 140 km/h, Bo-Bo fabricated bogies loosely based on the Flexicoil models. They are still in service and are homed either at TKD & BZA to haul short commuter trains and shunting around the area. They look just like all other ALCOs and are easily identified by the laterally “sculpted” and baldie grille-less short hood.
WDP1M is a rebuilt version with better powerpack and better cooling via a modified radiator. The biggest change is in the suspension. Rubber springs have been provided instead of coil springs, along with other changes to the suspension and axle components.
The scrapping of these locomotives has begun. All WDP-1 locomotives of BZA DLS were condemned in February 2023 and scrapped at DLS.
