The national capital's first road tunnel in the Pragati Maidan area and its five underpasses, which were opened on Sunday after missing five deadlines, will give motorists relief from the traffic snarls in and around ITO. The Pragati Maidan Integrated Transit Corridor, comprising a 1.3-km-long tunnel and five underpasses and built over four years, was inaugurated by Prime Minister Narendra Modi on Sunday.