Milton line
commuter rail service in Ontario, Canada

The Milton line is one of the seven train lines of the GO Transit system in the Greater Toronto Area, Ontario, Canada. It extends from Union Station in Toronto to Milton, by way of Mississauga. It opened on October 25, 1981.
Trains on the Milton line run in the peak direction during peak periods. The Ontario government, through its crown agency Metrolinx, is working to have more train service along the Milton line over the next decade, through the GO Expansion program. During peak hours, trains would run in peak direction every 15 minutes along this line. The Milton line is the fourth-busiest GO Transit line in the rail network.
History
GO Transit explored expansion options along the Canadian Pacific Railway line through what is now Mississauga and Halton as early as 1969, but planning started in 1975 with negotiations with municipal governments and the Canadian Pacific Railway. Station location selection was completed in March 1977 as was the acquisition of the lands for the Dixie GO Station and the line received formal approval from the Management Board in 1978. However, due to equipment shortages and earlier funding pressures the opening date was moved from 1979 to 1981.
Begin with the source’s own compact description: “Milton line” is commuter rail service in Ontario, Canada. The dossier treats that line as a proposition to test through Milton, line and commuter, not as a finished interpretation.
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Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Sep 19, 2026. The linked authority identifier is Q3239156. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1981, 1969, 1975 and 1977.
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This entry incorporates text from “Milton line” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.