The primary motivation was to switch from a fixed-block system to a moving block system, to reduce the headway from the current 114 seconds down to 95 seconds,

The primary motivation was to switch from a fixed-block system to a moving block system, to reduce the headway from the current 114 seconds down to 95 seconds, or a 16% increase in capacity. I can't find an English language source for the figures right now, but they are widely quoted in the local media.