MacMillan Yard

MacMillan Yard is located north of the point where the "Toronto bypass" mainline changes designation between the York and Halton Subdivisions; spanning the area around the districts of Maple and Concord within Vaughan.

The project also freed up track time along the Union Station rail corridor that allowed the Government of Ontario to establish a new commuter service, GO Transit.

The yard operates 24 hours a day and handles over 1 million cars (loads and empties) per year.

Several York Region Transit routes, including Viva Orange, operate in the vicinity of the yard; most connect to the northern terminus of the Toronto Transit Commission's Line 1 Yonge-University subway line, but one connects to Rutherford GO Station The closest residential population to a track that carries dangerous goods is located approximately 150 meters from the northern extremity of the yard.

[1] On September 17, 2007, while pulling south on the pullback track with consist of 67 loads and 30 empties, weighing about 9054 tons, the 2200 West yard assignment side-collided with the tail end of train M33931-17.

The TSB said that ground crews were using a remote control device known widely in the industry as a "belt pack" to assemble a train when the 72 loaded cars as well as two empty ones rolled away uncontrolled.

The impact resulted in a spill of a powdered form of terephthalic acid, a compound used in the manufacturing of plastics.

They found a CN worker trapped beneath a rail car that had derailed and fallen on its side.