To block the defence area from public view, it has been decided to instal View Cutters before the expressway is open to traffic. The HMDA has already invited expression of interest from the prospective bidders for installation of View Cutters.

It has also been decided to instal Sound Barriers at six busy junctions along the elevated expressway.

The Sound Barriers reduce the traffic noise by almost half providing relief to the people residing in adjacent areas.

The HMDA has identified five busy junctions surrounded by residential colonies, shopping complexes and private hospitals.

The Sound Barriers will come up at Rythu Bazar (Mehdipatnam), Rethibowli Junction, near Mythri Hospital (76-77 piers), Upperapally, Indra Reddy statue, and Aramghar Junction.

Speaking to `Expresso’, HMDA Chief Engineer Vivek Deshmukh said sound barriers were installed at some stretches of Delhi Metro Rail.

In the US and Europe, installation of sound barriers on highways passing through residential areas is common.

The barriers are solid structures built between the expressway and the residential areas, which absorb t h e t r a f f i c noise. The sound barriers may be of concrete, wood, metal or fibre.

All types of sound barriers are equally effective in reducing the noise, if they have the required density, the HMDA Chief Engineer said.