On Oct 30, 10:24*am, D7666 wrote:
On Oct 30, 3:51*pm, E27002 wrote:

On Oct 30, 3:42*am, "Peter Masson" wrote:
Will the tram trains use the existing 25 kV OHLE, or will the line be
re-electrified at 750 V DC?
Those were the questions that came to my mind. *If the system extends
in the street 25 kV would not be an option there. OTOH, IIRC Karlsruhe
has dual voltage units.

There is no need to re-electrify for the sake of it ... tram-trains
such as Siemens Avanto are already capable of 750 1500 3000 15000
25000 V operation of various systems and frequencies, and in dual
voltage forms - 750/25000 V is actually the one in Siemens export
blurb.

I'd also suggest the cost of 750 V DC re-electrification could be as
high as providing a mid point passing loop, then there'd be a need for
full depot provision if single voltage DC. At least a 25 kV tram/train
can still get to Willesden / Bletchley / Northampton / wherever.

A novel solution would be to a two track covered car-shed that *is*
the passing loop i.e. build loop under a shed. All trams work in day,
spare if any can sit at Watford Jn in a sdg, at night they berth in
the shed, passenger platform - I assume we are keeping high platforms
- cab double as cleabers access.

Now where did I get that idea from .... Volks perhaps )

If this is not just electioneering, then this might be a good
solution. Is there potentional to continue the route into the city/
town centre(s) at either or both ends?