Kamayani Express - Late आना है काम तुम्हारा लेकिन मैं फिर भी हूँ तुम्हारा दीवाना - Aman

In this respect, it can be said that all the train rakes running on the are I Rlys tracks including the premier ones like Rajdhani/ Shatabdi/ Duronto etc are under utilised !! The culprit here is the slack time given to the trains so as to accommodate large number of passenger/freight trains jostling for "green Signal" to move along in the limited Indian railway Network, and to facilitate the regular track maintenance activities.
If all trains get green signal through out their run about 20-35% of the running times can be saved for most of the express trains on IRly network.
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Rajdhani enjoy topmost priority (minimum slack time, interesting to compare with NZM-TVC Raj) where as the Talgo train, I guess should have got through green signal for NDLS-BCY journey (w/o any provision of slack time)
Talgo was expected to do NDLS-BCTin 13 hrs against 16 hrs of Raj i.e. a gain of 3 hours For same priority, technically only time Talgo train can save is faster acceleration/ deceleration at stops and speed restrictions due to very small train load (about half hour?) and higher speed maintained on curves (say another half - to one hour). Rest of the time it was supposed to gain i.e. 1.5-2 hrs should be due to difference in slack time.
One burning example in this respect is, HWH-CSTM Duronto, which had same operational speed (105/110kmph) as other super-fast trains like Gnaneshwari/ Geetanjali but much higher avg. speed of 75kmph against just 55-60 kmph for the other S/F trains on the route. On the inaugural run (yr 2009) the Duronto (the pet train of RM) was given through green signal and the avg. running speed between 2 stops (excluding stoppage time) was around 90-95 kmph, where as the same for other S/F trains was 60-80 kmph, indicating how the slack time given to trains drastically increase the journey times.

LHB coaches(Max speed 200kmph) are made of Stainless steel which makes it heavier than technologically more advanced under trial Talgo coaches (Max speed 250kmph) made up of aluminium.
A shatabdi was planned to be introduced between Mumbai & Goa on the completion of 150 years of Indian Rlys with operational speed of 150 kmph (150yrs..kmph the same figure!) and a jouney time of 6hours flat. Accordingly a speed trial was conducted. Unfortunately there was an accident in the same year on KRly,and the high speed train plan was dropped as a safety measure. LHB coaches had been tested at 179 kmph max during a trail run as claimed by the then MD Mr. Raja Ram.
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trial run which I conducted successfully between Madgaon (Goa) and Roha (near Mumbai) in 2003 averaged 150 kmph continuously over a 400 km stretch, the longest in rail history then," Rajaram recalled.
"The train slashed travel time to a mere three-and-a-half hours, from the nearly nine hours that superfast trains normally take to complete the 442-km journey.
"On a particular stretch, the General Electric-designed diesel loco effortlessly touched 179 kmph until I asked the driver to slow down," said Rajaram, who rode with the driver.
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