In 1904, the TSERLPC became the Scarboro Division of the Toronto and York Radial Railway, a subsidiary of the Toronto Railway Company. In 1922, the radial line was acquired by the City of Toronto which contracted the Hydro-Electric Power Commission of Ontario operate the line as the Hydro-Electric Railways: Toronto and York Division. After 1927, the radial service was operated by the Toronto Transportation Commission but with city streetcar service being extended to the Birchmount Loop. Beyond Birchmount, radial service ceased by 1936.