Quote:
Originally Posted by bartlebooth
Do you know why the city insisted on trams instead of metro? Was it really a lack of imagination, was it a cost thing, or was it both? Enclosed stations sounds appealing. Too bad.
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They wanted a system that could both do high volume in the core as well as low volume at-grade (surface rail; trams) in the suburbs.
I wrote about all the characteristics that went into their decision:
Ottawa 2009 Rail System Selection
In retrospect, they were trying to do too many very different things with a single vehicle.
They should have selected light metro for the core (to meet 20,000 - 24,000 PPHPD) and then light rail connections at the edges to the suburbs. The presenters at the 2009 rail tech forum and the analysis report they commissioned all told them that light rail couldn't do the core requirement of >20,000 PPHPD (passengers per hour per day).
Also, even with the city having chosen light rail, many people involved in the subsequent years as the project progressed should have gone back to the city before final vehicle selection and system design and told them that they had to change the decision to metro, because even with the best efforts to find a light rail vehicle, they couldn't find one that could actually do what the city wanted.
In any case, we're stuck with the decision and vehicles, it would cost billions to change from light rail to heavy rail metro now.