Rockingham Racer wrote:BandA wrote:I see mixed double-stack freight, commuter rail and subway cars loading on to carriers to run through this expensive tunnel. Special traction assist helps with steep approach ramps (either cables, rack & gear or magnets). Assembled trains would go through on two minute intervals.
Thanks for the chuckle.
Your welcome...this is the only practical solution I could think of that would justify building a north-south link, i.e. creating something that has never been done using technology that already exists. A few years ago I did a real back of the napkin calculation assuming $2B, assuming a carrying cost of 5% (what is the actual rates that MA pays on their bonds?...transparency much?). That's $100M a year, or $273,972 per day for 30 years, just to create the ROW, not counting maintenance, rolling stock, or operating costs! How many riders every day? In order to justify the expenditure, you need this rail link to be highway competitive - >= 45MPH, and have train density approaching what they have in NYC. In order to achieve this you need to pack mixed traffic. To do that you need to be crash resistant, which I interpret in my made-up scenario as anything riding on top of special crash resistant carriers. Rack-and-gear, linear induction, cables, carriers, Automatic Train Operation are all existing technology. 'course the last time Boston transportation was on the cutting edge was 1897.