ðə tˈʌnəlz wɜː dˈuː tə ðɪ ᵻlˌɪmᵻnˈeɪʃən ʌvðə pˈɪstən ɪfˈɛkt, wˌɪtʃ ɪz ʌnplˈɛzənt tə pˈæsɪndʒɚz ɪnðə stˈeɪʃənz, bˈɪlt æz dˈʌbəltɹˈæk.
The tunnels were due to the elimination of the piston effect, which is unpleasant to passengers in the stations, built as double-track.