लड़ते लड़ते जीना है, लड़ते लड़ते मरना है
- Aug 10, 2020
Ya'll Nibbiars in Mumbai It's not a problem as most of the hard rock is within reach but cost was a factors.Good point. In some areas, the soil is not stable enough to permit underground metros. Overall, I prefer elevated systems because from a maintenance and repair standpoint, it is more economically feasible to maintain & repair elevated systems than underground.