(a) whether there has been slow progress of gauge conversion and doubling of railway lines;
(b) if so, whether any study has been conducted for ascertaining the reasons behind slow progress of these works;
(c) if so, the details thereof;
(d) the present status of gauge conversion and doubling of railway lines projects including gauge conversion project of Kollam-Chenkotta during the last three years;
(e) whether any monthly targets have been set for all the 17 railway zones under corrective measures and if so, the details thereof along with the achievements reflected as a result thereof; and
(f) the manner and the extent to which these measures are likely to speed up the works in Railways?