(a) the number of engineering/structural defects in construction of National Highways causing accidents have come to the notice of the Government across the country during the last three years, State/UT-wise and NH-wise along with the action taken/being taken by the Government to remove such engineering/structural defects so far; and
(b) whether the Government has received any complaints from various quarters on the engineering/structural defects in National Highways in the country during the said period, if so, the details thereof, State/UT-wise and NH-wise?