Patent ID: 8807048

Claim:
A personal rapid transportation (PRT) system that comprises a first and second set of rails on which a plurality of moving units run on a first and second set of wheels where the first set of rails consists of three rails aligned in a vertical plane further comprising an upper rail, a middle rail, and lower rail, wherein the upper rail and the middle rail form an upper track, and the middle rail and the lower rail form a lower track; and the second set of rails implementing a ramp and located on only one side of the first set of rails consisting of three rails aligned in a second vertical plane which is parallel to the first vertical plane and consisting of an upper ramp rail, a middle ramp rail, and lower ramp rail, wherein the upper ramp rail and the middle ramp rail form an upper ramp track, and the middle ramp rail and the lower ramp rail form a lower ramp track; and before reaching the lower ramp track, the moving units run on the first set of wheels on the lower track of the first set of rails, then at the beginning of the ramp the moving units engage gradually the second set of wheels to the lower ramp track that is a part the second set of rails, and before the parallel part of the above vertical planes ends, the first set of wheels is gradually disengaged from the lower track of the first set of rails and the moving units now run on the lower ramp track that is part of the second set of rails where the lower ramp track that is part of the second set of rails curves gradually away from the first vertical plane where the lower track of the first set of rails is located; and when coming from the upper ramp track that is a part of the second set of rails the moving units run on the second set of wheels on the upper ramp track that is part of the second set of rails, then at the beginning of the part where both the vertical planes are parallel the moving units engage gradually the first set of wheels to the upper track that is a part the first set of rails, and before the parallel part of the above vertical planes ends, the second set of wheels is gradually disengaged from the upper ramp track which is a part of the second set of rails and the moving units now run on the upper track that is part of the first set of rails.