The two most succesful WAP locomotives of IR...
WAP4 with 775 units & WAP7 with 245 units(still counting)
#22348 SRC WAP4 after hauling Jaggnath Express and #30352 TKD WAP7 after hauling Kalinga Utkal waiting to change tracks before entering into the ETS
Pic Credit:Purusottam Basu