Editing Line 3 Scarborough (section)

===Proposal and construction===
In 1972, the [[Government of Ontario]] announced the [[GO-Urban]] plan to build an intermediate capacity transit system across suburban Toronto, particularly in Scarborough and Etobicoke, using the experimental [[Krauss-Maffei Transurban]]. However, [[KraussMaffei]] was forced to abandon development when the [[West Germany|West German]] federal government declined further funding.<ref>{{cite news |title=GO-Urban's bright future fades suddenly |work=Toronto Star |date=November 14, 1974}}</ref> GO-Urban then used some of the technologies from the Transurban to develop a simpler steel-wheeled version, the ICTS system.

During this period, the TTC had been working on plans to extend its own network with a series of [[Tram|streetcar]] systems using a new and greatly enlarged streetcar design, the [[Canadian Light Rail Vehicle]] (CLRV). The Ontario government, in charge of [[GO Transit]], was looking for a test site for the ICTS system and demanded that the TTC use it for one of their planned streetcar projects, selecting the Scarborough extension. The TTC initially refused to make the change, arguing it was both the wrong solution and that since the construction of the line had already commenced this would be a waste of money. However, as the Ontario government was providing 75 percent of the funding for the line, they changed their minds when the government threatened to cut the funding.

At [[Kennedy station]], there are clues revealing that it was originally built for streetcar operation; it is possible to see old low-level streetcar platforms protruding under the current high-level platforms, and the loop to turn streetcars proved too sharp for safe operation of the ICTS cars, which did not have a reason to turn around, so the loop was replaced by a single-track [[Spanish solution]]-like crossover.<ref>{{cite web |url=http://transit.toronto.on.ca/subway/5002.shtml |title=Frequently Asked Questions about Toronto's Subway and the Scarborough RT – Transit Toronto – Content |website=Transit Toronto |access-date=December 7, 2010 |archive-date=May 15, 2011 |archive-url=https://web.archive.org/web/20110515221135/http://transit.toronto.on.ca/subway/5002.shtml |url-status=live}}</ref> Ontario wanted to develop and promote its new technology, which had been designed for a proposed GO Transit urban service known as [[GO-ALRT]], first proposed in 1982. Changes to federal railway regulations had made the new system unnecessary for GO, so the government hoped to sell it to other transit services in order to recoup its investment.