160kmph is already planned for GQ routes and IR hopes to do it 2025. Tagret appears to be difficult to achieve. 160kmph is likely to be done in 2 phases, first upgraation from 110 to 130kmph and then 130 to 160 kmph.
Practically it following appears to be possibilities:
* 160kmph on NDLS-BCT/HWH route by 2024-25 as these routes already 130kmph on substantial of sections.
*...
more... 130kmph on NDLS-MAS, HWH-CSTM/ MAS, CSTM-MAS by 2023-24
* 160kmph on NDLS-MAS, HWH-CSTM/ MAS, CSTM-MAS may take much longer depending on the completion of respective third line/ fourth line/ DFC projects.