(a) whether the idea of having a single and unigauge railway network in the country floated long back is now finding favour and it has now been decided to undertake the execution of this challenging project;
(b) if so, the proposed parameters and formulations in this regard;
(c) the total length of Railways network in the country and its present break up in narrow, metre and broad gauges; and
(d) the details of priorities of starting the work, the time by which the said work is likely to be expanded for this ambitious project?