Talk:Hitachi Rail Italy Driverless Metro

Sources and numbers
Arsenikk: Please check sources for numbers. I came here from GAN and the first link I checked was dead. I found a different Breda PDF which (I suspect) took its place, http://www.ansaldobreda.com/upload/allegati_prodotti/59_ITA_driverless.pdf - is it the same or not, I don't know.

The first time I read the lead something was really fishy - how can a 105 kW engine pull a passenger car, even a "light" one? It appears that it's engine per bogie, not per car (or is it one per axle, not per bogie? the source is too brief for such "technicalities"). But then I checked the numbers in the table and they aren't right either! For example, Breda brochure says Copenhagen trains have "8 x 128 kW", your table says "3 cars, 630 kW". The Breda brochure clearly describes a 4-car train (without explicitly saying "four cars"), but their Copenhagen photo shows a 3-car train ! "Reliable, third-pary sources independent of the subject" ... D'oh! I'll leave these riddles for you to solve. Also please check "22 vehicles built" in the infobox, it contradicts the "trains" data in the table (did Copenhagen receive their 34 trains or not? Or is it 34 cars, not 34 trains?).

I'd strongly suggest removing the article from GAN until it's all sorted out. And I'm talking only about numbers, not looking into words (which, as this edit shows, are another hint at non-reliable sourcing).

Cheers, East of Borschov 14:47, 4 November 2010 (UTC)


 * One thing that makes me worry - this tidbit on Milan Line 5 says "minimum headway of 75 seconds". How in the world can they do it in a driverless system? Auto-driving is peanuts, the real problem is in safe authorization to close doors and depart. Even moderate passenger congestion (Milan isn't a big city, don't expect Shanghai or Moscow crowds, but still...) will break the 75-second schedule. Do they actually have human attendants pressing the go button on the station, or do they rely on automation alone? East of Borschov 15:24, 4 November 2010 (UTC)
 * I have to write what the sources say. If you can find information that contradicts this specifically, please point it out. However, also the Rome Metro site claims a 75-second headway. I've used unstaffed trains since the mid-1980s, and 30 years later the headway should not be limited by the closing mechanisms for the doors. Presuming the use of moving blocks, and the braking distance at 80 km/h, 75 doesn't seem completely unreasonable, although I admit it is cutting edge. But I fear both my and your statements at the moment are original research. Arsenikk (talk)  22:09, 25 November 2010 (UTC)


 * I don't think it's the same PDF. At least I cannot find the mention of the doors that are supposed to be 1,3 m wide and 1.945 m tall. According to the other source, “En mini-metro med maksimal virkning”, the doors are 1,6 m wide (quote: “Døre: [...] 1600 mm”). Also the numbers for the Copenhagen metro seems wrong (8 doors per side, 50,5 m long, and total places 536 compared to 96 seats + 204 standing places mentioned in “En mini-metro med maksimal virkning”). --C960657 (talk) 00:56, 28 November 2010 (UTC)

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