There is surprisingly no locomotive classified WDG1 on Indian Railways. However, there is evidence enough to believe that a WDG1 class could have actually existed once as an experimental or prototype class which never went into production. So now the next locomotive is WDG 2. WDG 2 was later named as WDG 3A. The WDG3A was also developed to overcome the shortcomings of the WDM2 and is the triplet brother of the WDM3A and WDP3A. Freight locomotives have to haul far heavier loads as compared to passenger services and hence require to be heavier and have higher effort to get moving. The WDG3A is one of IR’s most successful locomotives and most common locomotive today with 1171 produced and still going strong, the only ALCO engine currently in production along with the WDM3D. Very rugged and very reliable though tad underpowered, WDG3As are still drive a huge chunk of India’s economy, moving coal, petroleum products, cement, grain, containers and what not across the nation.
