Telecom regulator Trai on Friday recommended the allotment of the only chunk of 5 megahertz spectrum left in premium 700 Mhz band frequency range to Indian Railways for passenger safety applications. The price of per megahertz (Mhz) spectrum in 700 Mhz band frequency was priced at Rs 3,927 crore for commercial use. "In addition to the already assigned 5 MHz (paired) frequency spectrum in the 700 MHz frequency band, an additional 5 MHz (paired) frequency spectrum in the 700 MHz frequency band should be assigned to Indian Railways for its safety and security applications along the railway tracks for captive use," Trai said in its recommendation on "Assignment of Additional Spectrum to Indian Railways for its Safety and Security Applications". The DoT has already allocated 5 Mhz of spectrum in the 700 Mhz band to Indian Railways in 2021. Telecom signals transmitted in 700 Mhz band can cover an area in the range of 6-10 km. The vast coverage provided in these frequency bands reduces th