Abstract: A continuous, single line, traction driven cable transportation system, intended for logging applications but not limited thereto. The system is open, such that line can be added to it at any time, whether during rigging, or during operation. Thus, theoretically, there is no limit to the system's longitudinal or lateral distance capabilities. The carriage maintains a fixed position during lateral yarding phases of operation and the system may be tightened or loosened at will.Two modifications of the system described above; a noncontinuous, single line, traction driven cable transportation system. The modified systems contain a skidding winch on which only a fixed amount of skidding line is wound, thereby limiting the lateral skidding distance capability of the system.