Correct option is B
Method of Noise abatement and control:
Planting of trees and hedges on either side of the track or road.
New aerodromes should be located sufficiently away from the city and adequate boundary area should be allocated for the purpose such that residential construction may come up only beyond that area.
Enforcement of legal laws and ordinances as per IS 4954-1968.
The location of the railway station, shunting yards, loco-sheds and the routing of rails have to be carefully worked out so that the noise produced in these areas cause least disturbance to the residential community and other similar areas requiring day and night quiet conditions.
Proper maintenance of vehicles as per standards.
The type of surfacing of road used affects the extent of noise emanating from the roads/streets. Hard metaled roads should be discouraged where animal drawn or conventional type of vehicles with hard wheels are still in use. Asphalted road surfaces being soft are less conducive to impact noises.
