Delhi-Ambala-Chandigarh/Ludhiana track (about 350 RKM) should be the first 130kmph route which is not a part of Golden Quadrilateral. 130kmph speed upgradation of this vital section is very useful as there are a large number of 130kmph fit all ac trains on the route mainly operating between
Delhi and Chandigarh-3 shatabdies+ Proposed Tejas
Delhi and Amritsar-2 Shatabdies,
Delhi and Jammu/Katra-Rajdhani, Duronto,...
more... Sreeshakti, ACSF
AC SFs, and LHB trains that may come from different destinations and bound to Jammu/Amritsar via NDLS-UMB-LDH route