SOR meaning in Regional ?

The Southern Ontario Railway (reporting mark RLHH) is a shortline railroad in the province of Ontario, owned and operated by Genesee & Wyoming Canada Inc., the Canadian subsidiary of Genesee & Wyoming Inc.. It operates 69 miles (111 km) of track from Brantford to Nanticoke, Ontario. The railroad began operations in 1998, and was acquired by RailAmerica two years later. It has interchanges with the Canadian National Railway at Hamilton via trackage rights, Brantford and Paris, and interchanges with the Canadian Pacific Railway at Hamilton.

On July 23, 2012, Genesee & Wyoming Inc. announced that it intended to purchase RailAmerica in a deal valued at $1.39 billion. Approval of the purchase was granted by the U.S. Surface Transportation Board on December 19, 2012.

The railroad's traffic comes mainly from steel, agricultural products, petroleum products, and chemicals. The SOR carries more than 44,000 carloads a year.