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Both cities are located in two different states provincesnamely ontario and quebec respectively. While toronto is the capital of ontario, montreal is a major city in quebec.

English is the major language of Toronto, whereas French is the major language of Montréal.

There is no line U5 in the Vienna metro network, for the simple reason that it just wouldn't be. From the 1960s up until the 1980s every long-term network plan contained a line U5, yet the traffic predictions for each of these proposals were never promising enough to actually warrant the construction of the line. Originally, the line was supposed to be built as follows:

• Hernals - Alser Strasse - Landesgericht - Scottentor - Schottenring - Taborstrasse - Praterstern - Ausstellungsstrasse - Stadion - Stadlauer Brücke (Network variants A through F, 1966 and G through J, 1967)

However, it was soon noticed that financial constraints would prohibit the line from being built in its entirety. So the section Praterstern-Stadlauer Brücke was instead added to line U1 as branch U1B; the section between Schottenring and Praterstern was abandoned altogether, and the remainder (Schottenring-Hernals) was to be operated as branch U4A of line U4. Line U5 had died for the first time.

Subsequently, plans existed to convert the tram tunnel along the southern Gürtel to full metro similar to line U2. Now that there was no line U5, the section

• Längenfeldgasse - Gürtel - Südbahnhof - Schlachthausgasse - Erdberg (Network variants N (1973) and N3 (1975),

was referred to as U5 instead. However, these plans were also abandoned due to financial constraints. Thus line U5 had died a second time.

At one point, line U5 appears as the designation for the tangential line Floridsdorf-Kagran-Stadlau on the other side of the river Danube (Network variant M, 1970); on all other plans this is, however, referred to as line U7, so the designation may just be an error.

Thus there was no line U5 when the work began on preparing the first phase of the metro system. Only line U4A was left from the original plans. The plans to build lines U2 (Karlsplatz-Währing) and U4A (Schottenring-Hernals) in their entirety still existed, but it was clear that this could not be financed at this point. So the decision was made to build only parts of both lines and to simply link these at the Landesgericht by means of a very narrow curve (still the narrowest curve of the entire Vienna subway system), thus forming line U2 as it appears in the present network.

In the early eighties the concept of branch lines was finally abandoned (the experience with line U2/4 certainly contributed to this decision). However, the plans to build the sections to Währing and Hernals at some point in the future still existed, so line U4A was renamed back into U5. This had, however, no significance whatsoever as to the realisation of this line.

In the early 1990s various politicians tried to increase their popularity by demanding that a "line U5" be built into the residential areas of Stadlau, Hirschstetten and Aspern. Suggestions included a line from Erdberg (U3/5) or an extension of line U2 (U2/5). City coucillor Görg finally adopted the idea and decided that the latter would indeed be built. The variant that was finally chosen from a number of suggestions turned out to be almost identical to that of line U5 of the 1960s!

This means that when the U2 extension will be opened in 2009, the line U2 will even more than today consist of branches of the lines U2 and U5; U2 from Karlsplatz to Landesgericht, and U5 from Landesgericht to Stadlau. It is thus the ironic fate of line U5 to be built, but not to appear on the network map!

This situation may, however, change in a couple of decades, if the city council's current plans for extending the metro network actually take shape. In February 2002 councillor Schicker presented plans for stages 4 and 5 of the metro network, and stage 5 (to be built around 2020) includes a line U5!

According to these plans, the current line U2 will indeed be split, but not as initially planned. Line U5 will go from Hernals to Landesgerichtsstrasse, but from then on not east, but south, where it will take over the southern branch of line U2 to Gudrunstrasse via Karlsplatz, Eurogate, and the Arsenal.

In turn, line U2 will receive a completely new southern branch from Rathaus via Neubaugasse, Pilgramgasse and Matzleinsdorfer Platz to Wienerberg.

Financial restrictions permitting, this might mean that at sometime in the third decade of the century line U5 will finally appear on the network map.