DUAL-MODE, ADJUSTABLE-SPAN VEHICLES (DMASV) AND A RAIL FREEWAY SYSTEM

摘要

A dual-mode, adjustable wheel-span vehicle includes at least two pairs of rail wheels for use on rails, wherein some or all of the at least two pairs of rail wheels are adjustable in a distance between a pair of the rail wheels such that the at least two pairs of rail wheels can work with different rail gauges; a mechanism for adjusting a span of the at least two pairs of rail wheels; and at least two pairs of tire wheels for regular roadways. A transportation system for the vehicles includes a rail freeway network having electric power supply lines, sensors to get local information, signals to show system status, and a central computer for system controls; and a plurality of entry and exit ramps for the vehicles to enter or exit the rail freeway network, wherein the entry and exit ramps includes an overhead and/or underneath ramp.