[FDArchitects]

The design philosophy of Metro is based on following criteria:

a) Application of state-of-the-art Technology
b) Service proven design
c) Design life 30 years
d) Minimum life cycle cost
e) Low maintenance cost
f) Use of interchangeable, modular components
g) Extensive and prominent labelling of parts, cables and wires
h) Use of unique serial numbers for traceability of components
i) High reliability
j) Low energy loss
k) System safety
l) Adequate redundancy in system
m) Fire and smoke protection
n) Use of fire retardant materials
o) Environment friendly
p) Adherence to operational performance requirements
q) Maximum utilisation of indigenous materials and skills, subject to quality conformity