(a) whether cases of irregularities in construction of roads by the National Highways Authority of India (NHAI) and corruption through connivance between officers of NHAI and road construction companies have come to the notice of the Government;
(b) if so, the details thereof;
(c) the total number of such cases reported across the country including Maharashtra, Uttar Pradesh and Bihar; and
(d) the number and details of cases out of them in which action has been taken?