ɪn nˈaɪntiːnhˈʌndɹɪd fˈoːɹɾi wˈʌn, ðə bˈɔstən ˈɛlɪvˌeɪɾᵻd ɹˈeɪlweɪ bˈɔːt ðə bˌiːˌɑːɹbˈiː ænd ˈɛl ɹˈaɪt ʌv wˈeɪ fɹʌm dˈeɪ skwˈɛɹ tə ɹᵻvˈɪɹ bˈiːtʃ fɔːɹ jˈuːs æz ɐ hˈaɪspˈiːd tɹˈɑːli lˈaɪn sˈɪmɪlɚ tə ðɪ ˈæʃmɔnt mˈæɾɐpˌæn hˈaɪ spˈiːd lˈaɪn; ðiːz plˈænz wɜː dᵻlˈeɪd baɪ ðɪ ˈɑːnsɛt ʌv wˈɜːld wˈɔːɹ ɹˌoʊmən tˈuː.
In 1941, the Boston Elevated Railway bought the BRB&L right of way from Day Square to Revere Beach for use as a high-speed trolley line similar to the Ashmont–Mattapan High Speed Line; these plans were delayed by the onset of World War II.