If you see in last 2 to 3 yrs no flight in Kolkata to Delhi sector runs vacant....all flights run full with 96 to 97% avgoccupancy. But now except festival seasons SDAH Duronto, HWH Duronto AC coaches, even Sometimes Rajdhani exp 2A, 1A runs with few empty seats....... if you see in last 2 yrs because of this even during Durga puja time ER don't give Puja special trains between HWH/ SDAH/ KOAA to NDLS/ ANVT, because passengers book flights 4 months before during this time also. Time and Money are nowadays most important to everybody.
I am not talking about shifting full rail traffic to air...but my point is the speed at which air traffic is developing day by...
more... day like u see new new Airports coming up at new places like see Andal, Jharsuguda, etc and many new airlines comming up and they r giving cheaper rates and travel time less, so in many sectors Railways are fastly loosing passengers to flights. So, its high time IR must do something fastly to reduce travel time and keep prices very competitive to Airlines in these sectors.