Arey baba m saying dat only. If u want to maintain speed of 85-90 than give it to train with high stoppage and express and mail trains. I have mentioned in prev comment and earlier atleast give p5 to lhb coaches train or train with less stoppages with high priority. Aap train ko lhb coaches de rahe ho trail kara rahe ho icf coaches train k piche ya lhb coaches ki train wag 5 de rahe ho kabhi kuch de rahe ho but mail trains perm p7 k saath run ho rahi this is wrong. Kya fayda lhb coaches ka fir. Ye to public money ka wastage aap prem charges apply kar rahe ho dynamic fare laga rahe ho. For example taj express ko lhb mila uska time table speed up b hua and even p7 h but aaj b it takes 7 hours to reach jhs from nzm...
more... and some times even more pehle ki tarah. Than what the use. Purane coaches he chalne dete development k naam par to extra charge mat karo