after the WDM3F, IR realized that it is futile to try and crank more power of the ALCOs as they were too old and outdated and shifted attention to the EMD. This also marked the beginning of the end of the ALCO domination on Indian Railways. Export versions Sri Lanka Ten WDM-3D locomotives were purchased by Sri Lanka Railways in 2012. They were the longest and most powerful locomotives owned by Sri Lanka Railways at that time. They were allocated the M10 class. However some specifications are somewhat different for SLR. This class was used for the construction work of Talaimannar and Kankasanthurei railway lines. After extending the northern line to Jaffna and beyond, M10s were used for passenger services including Yal Devi on the northern line. As of August 2020, all units of this class are still in service. Bangladesh On 27 July 2020, due to over-aging of existing Bangladesh Railways locomotives, IR gave 10 WDM-3D units for free under its “grant assistance” plan. The Railways has modified the locos to suit the maximum height restrictions in BR and the donated locomotives (6-8 year old) have 28 years of serviceable life left. India formally handed over the locomotives in a virtual ceremony on July 27. The vehicles cost an estimated ₹600m ($US 8m) to manufacture. Locomotive sheds See also Sri Lanka Railways M10 Indian locomotive class WDM-2 List of diesel locomotives of India Indian Railways References https://www.irfca.org/faq/faq-specs.html#WDM-3D https://www.aitd.net.in/pdf/7/10.%20Locomotive%20Design%20Centre%20-%20RDSO.pdf Notes https://m.indiarailinfo.com/blog/post/1675425/3#1675425-3 https://www.dlw.indianrailways.gov.in/works/uploads/File/WDM3D.pdf https://www.facebook.com/AlCoRedifined/posts/some-specification-of-wdm3d-the-future-workhorse-of-indian-railwaysgeneral-descr/310260822341396/ http://traintrackers.org/misc/wdm3d.html Bibliography https://www.scribd.com/doc/309729773/WDM3D External links M-3D Co-Co locomotives Banaras Locomotive Works locomotives Railway locomotives introduced in 2003 5 ft 6 in gauge locomotives