but what about CSTM-KOP Koyna Exp? this train always have a much more powerful WDP4 or WDP4B Engines, the rake composition for this train is as follows
1- slr, 5- gen, 4- 2s, 1- cc, 1- dr, 1- kly, 1- lds/hc, no pantry.
Total 14 bogies so why it needs WDP4 engines?