New Trend for LHB coaches in Coaching Depot to maintain

Introduction: 

Till recently, Indian Railways have been transporting passenger traffic mainly through coaches of ICF design. These coaches are being manufactured at ICF and RCF. A limited number of these coaches are being manufactured at BEML/Bangalore also.
These type of coaches are having limitations in terms of

a) Speed potential
b) Heavy corrosion
c) Poor riding comfort
d) Wearing of parts in the under gear