(a) whether the Government has decided to replace all conventional coaches with the light-weight Linke Hofmann Busch (LHB) coaches and if so, the details thereof;
(b) the manner in which allocation of LHB coaches to various divisions of Railways are done;
(c) the number of LHB coaches so far allotted to various divisions of Railways; and
(d) the number of LHB coaches put into service, so far, in the southern railway, which has the largest number of 6,500 conventional coaches in the country?