Mahesh ji aap ki baat se sehmat hu...AP express ko ka TAT bohat kam hai ndls aur hyb ka as compare to another train...agar subah 9 baje ndls arrived aur shaam ko 5 baje departure ...AP exp ko most fog effected train ki list me isi wajah se shamil kiya gaya hai...agar ye isko TN ki tarah 18hours ka TAT milta to shayad Fog me zyada prob nahi hoti..m