Alternate ideas about transit.

I wish I had thought of this when the rail rapid transit project for Honolulu was in its vision stage, however, my idea needed more incubation. Rather than building an imposing and expensive, not to mention aesthetically challenging superstucture or digging a big hole, how about a half hole in the ground? What if a half radius of a circle is created in which to lay the tracks below grade and the excavated soil can be mounded into a berm over a concrete vault? Maybe the berm would be ten feet tall and flattened on top for a bike and/or walking path. The berm would be low enough that it could be easily bridged for vehicular or pedestrian traffic. It would be high enough to be safely separated from human and other obstacles. What do you think about that?

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