Talk:Karlsruhe model

London

Doesn't this system also exist in London - for example on the Metropolitan line where the mainline trains at Amersham run on the same tracks as the tube trains? Tompagenet 2 July 2005 16:51 (UTC)

London and Sydney

The large Metropolitan trains do share tracks with the small Picadilly line trains, but they are both trains, not a tram and a train. Similarly, Metropolitan trains and British Rail trains.

The Karlsruhe model is taken to mean a mixtures of trams and trains.

In Sydney, several isolated tram lines were connected to the workshops by the conventional rail lines. But as such use was not for passengers, it does not count as a tram-train. The isolated lines were at Ashfield, Kogarah, Rockdale, St Leonards, Newcastle, Broken Hill.

Tabletop 09:15, 29 September 2005 (UTC)

Tompagenet is asking about the diesel-powered Chiltern Railways route from Birmingham Snow Hill running in part on the Metropolitan Line on the way to Marylebone station. This is indeed track sharing, and it predates the Karlsruhe system. The only mitigating factor (AFAIK) is that the train type Chiltern operate are used for slow local services in most places and are operationally similar to the Underground in terms of weight, speed, passenger load, etc.

There's also the part of the North London Line that shares with the District Line, although here, too, the types of train are arguably quite similar.

The Karlsruhe model isn't just about trams; it's about any kind of normally segregated local rail sharing tracks with mainline trains, such as now occurs on the Sunderland branch of the Tyne and Wear Metro, largely because there were safety and signalling issues in the past that prevented this. ProhibitOnions 22:37, 12 December 2005 (UTC)

page merge in German wikipedia

The Lemmata for Karlsruhe model and Tram-Train have been merged there, prematurely in my opinion. Hence I suggest that the interwiki link remains to point at de:Karlsruher Modell (Stadtbahn) which has turned into a redirect to de:Tram-Train but should be a Lemma proper.--Klaus with K 14:23, 20 September 2006 (UTC)

prohibitions on mixing light and heavy rail on same tracks

In the US, mixing light and heavy rail on the same tracks has long been prohibited by federal regulations, due to safety concerns. Thus, our commuter rail tracks that need heavy rail to serve peak loads are unable to offer efficient service the rest of the time. Instead, full size train sets are run with only one car open, too infrequently, during non-peak times. What is the situation in the rest of the world? Are the safety concerns a real issue, and how are they dealt with in various places and situations?-96.237.79.6 (talk) 17:21, 13 September 2010 (UTC)

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