ɪt kənˈɛkts ðə mˈɛtɹəlˌɪŋks wˈɛstən sˌʌbdᵻvˈɪʒən, wˌɪtʃ kˈæɹiz ðə ɡˌoʊ tɹˈænsɪt kˈɪtʃənɚ lˈaɪn, ˌʌp ɛkspɹˈɛs ænd vˈaɪə ɹˈeɪl kˈɔɹɪdˌoːɹ pˈæsɪndʒɚ sˈɜːvɪsᵻz, tə ðə sˌiːpˈiː nˈɔːɹθ tɚɹˈɑːntoʊ sˌʌbdᵻvˈɪʒən, wˌɪtʃ ɪz ðə kɐnˈeɪdiən pɐsˈɪfɪk ɹˈeɪlweɪz mˈeɪn fɹˈeɪt lˈaɪn əkɹˌɑːs tɚɹˈɑːntoʊ.
It connects the Metrolinx Weston Subdivision, which carries the GO Transit Kitchener line, UP Express and Via Rail Corridor passenger services, to the CP North Toronto Subdivision, which is the Canadian Pacific Railway's main freight line across Toronto.