Only Gatimaan runs at 160 kmph, because CRS clearance was exclusively issued for it (As i mentioned, WAP-5 + 12 coaches). All of its coaches have reflective tapes, and only few WAP-5 are assigned to clock 160 kmph.
BPL Shatabdi is certified for 150 kmph only, and right now it is restricted at 130 kmph. 155 kmph update is probably wrong.