AU Lifetime Supporter
Gathering Team Member
- Aug 24, 2003
If you have to dig two tubes might as well dig two full size ones. The cost difference between digging two full size tubes and one full and one smaller sized tube is not that great, and eventually when you do have to dig the second full size tube, the overall cost will turn out to be way higher. If two full size tubes are dug, one could save a small amount by not equipping the second tube with tracks, OHE and signaling equipment. But that seems like a truly silly thing to do.Would it be a lot cheaper to build one new tube (for a total of three tunnels) for more trains and a 4th, smaller tube for emergency vehicles?
I can't believe that in the allegedly richest country in the world we even require to have this discussion. The cost of the two tunnels is literally peanuts compared to random things that we do choose to spend money on.