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The MR-73 (Matériel roulant conçu en 1973) is the second generation of rubber-tired rolling stock used on the Montreal Metro. Manufactured by Bombardier Transportation, they entered service in November 1976.
The analysis highlights History and Measurement as prominent areas in the source structure around MR-73.
Source areas are shown by the number of related topics found in each part of the analysis. Use smaller areas too: they can reveal specialized angles and content gaps.
Smaller areas are not necessarily less important. They contain fewer connections in this analysis and can be useful for finding specialized angles or coverage gaps.
High-confidence facts extracted from structured source data. Use them as anchors for further research.
Browse the complete topic structure, not only the most central items. Less prominent entities and concepts can reveal missing angles, specialized context and useful research gaps. Each item opens a new analysis centered on that subject.
Deeper signals for content research, entity SEO and topical coverage. The plain-language headings explain what each technical view is useful for.
The extracted context around MR-73 shows recurring relationship patterns in the source. For example, MR-73 → Aaron Copland's, Common Man, Expo, Fanfare, Hz, It, LED, Montréal Metro, STM, The, The MR-73, These Another extracted example is MR-73 → Austrian, Bombardier, Bombardier's La Pocatière, Canada, French, Metro, SOFRETU, The, The MR-73's. Use these groups to spot repeated connection types before inspecting the individual relationships.
Use these terms to understand the vocabulary surrounding the topic, not as a checklist for keyword stuffing.
trains train stm bombardier service metro mr-63 chopper cars 1976 doors first three two traction interior lines side notes retirement
TTTA extracted 88 structured relationships around MR-73. Examples in this analysis include MR-73 → Acceleration → 5.2 km/(h⋅s) (3.2 mph/s) and MR-73 → Bogies → 2 sets per car. The table shows each extracted connection, where it came from and its confidence.
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| MR-73 | Acceleration | 5.2 km/(h⋅s) (3.2 mph/s) | 1.00 | infobox |
| MR-73 | Bogies | 2 sets per car | 1.00 | infobox |
| MR-73 | Braking system | Dynamic brakes with STM wooden brake shoes | 1.00 | infobox |
| MR-73 | Built at | La Pocatière, Quebec | 1.00 | infobox |
| MR-73 | Capacity | 160 total per car | 1.00 | infobox |
| MR-73 | Capacity | 39–40 seated per car | 1.00 | infobox |
| MR-73 | Capacity | 1,440 total per train[b] | 1.00 | infobox |
| MR-73 | Car body construction | Lightweight steel alloy | 1.00 | infobox |
| MR-73 | Constructed | 1974–1980 | 1.00 | infobox |
| MR-73 | Current collection | Side-running contact shoe | 1.00 | infobox |
| MR-73 | Depots | Plateau d'Youville, Saint-Charles, Montmorency, Angrignon, Beaugrand, Côte-Vertu | 1.00 | infobox |
| MR-73 | Doors | 4 pairs per side | 1.00 | infobox |
| MR-73 | Electric system | 750 V DC (nominal) from third rail on guide bars at either track side | 1.00 | infobox |
| MR-73 | Entered service | 11 November 1976; 49 years ago (1976-11-11) | 1.00 | infobox |
| MR-73 | Fleet numbers | 79-501 to 79-782 (motor) | 1.00 | infobox |
| MR-73 | Formation | 3 cars per trainset, operating as 6- or 9-car trains | 1.00 | infobox |
| MR-73 | HVAC | Forced-air ventilation, in-train heater | 1.00 | infobox |
| MR-73 | In service | 1976–present | 1.00 | infobox |
| MR-73 | Lines served | Green Line | 1.00 | infobox |
| MR-73 | Lines served | Yellow Line | 1.00 | infobox |
| MR-73 | Lines served | Blue Line | 1.00 | infobox |
| MR-73 | Manufacturer | Bombardier Transportation | 1.00 | infobox |
| MR-73 | Maximum speed | 80 km/h (50 mph) (design) | 1.00 | infobox |
| MR-73 | Maximum speed | 72 km/h (45 mph) (service) | 1.00 | infobox |
| MR-73 | Multiple working | Yes (2 or 3 trainsets coupled during service) | 1.00 | infobox |
| MR-73 | Number built | 423[a] | 1.00 | infobox |
| MR-73 | Number in service | 360 | 1.00 | infobox |
| MR-73 | Number preserved | 1 | 1.00 | infobox |
| MR-73 | Number scrapped | 62 | 1.00 | infobox |
| MR-73 | Operator | Société de transport de Montréal | 1.00 | infobox |
The concept neighborhoods around MR-73 bring nearby vocabulary together. In this analysis, examples include Side, Cars and Lines. Use the clusters to find adjacent concepts and terminology that may deserve separate research.
For MR-73, one of the stronger structural bridges in this analysis connects MR-73 with History. Bridges highlight paths between different parts of the map and can reveal research angles that are easy to miss in a flat list.
TTTA analyzes the structure around MR-73 to surface related topics, entities, relationships, concept neighborhoods and bridge connections. Use the map to explore areas such as History & Measurement, including less central topics that may reveal useful research gaps. Automatically extracted connections are research leads rather than rewritten encyclopedia content.
Source: Wikipedia — MR-73 · EN edition · Analysis: TopicsToTalkAbout