Actually mumbai to pune has 2 routes
1. Via kalyan , karjat
2. Via thane , diva , panvel , karjat..
Both routes cover approx same distance from mumbai to karjat towards Pune
Considering...
more... Bhusaval pune express this train comes from kasara towards kalyan.. That is it follows line towards Cst.. As kalyan is considered one of the busiest station of CR.. To avoid loco reversal at kalyan this train goes via kalyan - panvel to karjat..
For more info refer route of 17322 exp train and pragati exp... 17322 nd pragati follows thane - panvel route to karjat.. Nd then to pune whereas deccan express, deccan queen follows kalyan - karjat route to pune.. Finally the verdict is no loco reversal at kalyan..
I hv tried the best I can explain u..