RNC Rajdhani shortest route ? 12439/40 short bhi hai and revenue bhi deti hai. 124453/54 khali jaati hai. In sab chakkar me PRR sabse bada gainer bana hai. Rajdhani, Shatabdi and Duronto sab sath me mil gaye isko. Aur bhi important trains like DBG-SC EXP, MLDT-ST EXP.