High-capacity personal rapid transit (Hi-Cap PRT) is a concept that has been evolving for over 50 years. Notwithstanding attempts to kill it, it has kept emerging because in optimum form it has the potential for contributing significantly to the solution of fundamental problems of modern society including congestion, global warming, dependence on a dwindling supply of cheap oil, and most recently terrorism.

The future of Hi-Cap PRT depends on careful design starting with carefully thought-through criteria for the design of the new system and of its major elements.