Agar route kharab hota toh Humsafar Express ka slack itna kam naa hota. it's slow because it's a train for rural india as well, chote chote stations ko Ye Gujrat to Bihar/Up end to end connect karti hai. At some stations like Bina, iska Rake reversal hataya jaa sakta hai to improve timings, BRC se pehle hi bypass kar chuki hai