Having proven his capability in the field of steam railway construction Mr. Ross, in 1892, largely concentrated his energies upon problems of street railway building and in connection with Sir William Mackenzie purchased the Toronto Railway from the city of Toronto. He afterward rebuilt the tracks and installed electric power in the operation of the road. In 1892 he undertook the reorganization of the Montreal Street Railway, changing it from horse car to electric service. He was at the head of the syndicate that purchased the franchise from the old City Passenger Railway Company. In the same way he converted the street railways of Winnipeg and St. John, New Brunswick, into electric lines and in 1896 he joined Sir William Mackenzie in the purchase of the tramway systems of Birmingham, England, and organized the City of Birmingham Tramways Company for the operation of the road under an electric system. In the following year he secured a charter and franchise from the government of Jamaica to build electric tramways on the island. The energy and enterprise of Mr. Ross seemed limitless. No matter how many and how important were the enterprises with which he was actively connected it seemed possible for him to take on others and become a factor in their successful control. He was one of the promoters of the Lake of the Woods Milling Company in 1887, chief promoter of the Columbia River Lumber Company in 1889 and of the Canadian Land and Investment Company in 1891. His opinions carried weight in the councils of various companies with which he was connected as a member of the board of directors, including the Bank of Montreal; Calgary and Edmonton Land Company, Limited; Canada Life Insurance Company; Canada Sugar Refining Company, Limited; Canadian General Electric Company, Limited; Laurentide Paper Company, Limited; Royal Trust Company; and Dominion Bridge Company and St. John Railway Company, of which two last named he was president.