August kranti- dist 1379 km, TT- 17 hrs 15 min., halts -11
Avg. Speed 80 km /hr
BCT rajdhani- dist 1386km, TT- 15 hrs 50 min., halts- 6
Avg. Speed 88 km/hr
By reducing 5...
more... halts TT reduced by 1:25 hrs
So if new rajdhani reduces 4 halts travel time will reduce by at least 1 hr. Main thing required is speeding up in the existing tracks and givivn very very high priority. So, if new rajdhani can reduce TT by 4 hrs by reducing halts and increasing speed, then existing rajdhani trains can be sped up by at least 2:30 hrs by increasing speed. At least theoretically