Abstract: A scheduling system and method for moving plural objects through a multipath system described as a freight railway scheduling system. The scheduling system utilizes a cost reactive resource scheduler to minimize resource exception while at the same time minimizing the global costs associated with the solution. The achievable movement plan can be used to assist in the control of, or to automatically control, the movement of trains through the system.

Abstract: A method for identifying and determining the position of rolling stock within a railyard using a system that includes an AEI reader, a plurality of elevated electronic imaging devices and a tracking computer. The rolling stock includes a plurality of railcars and a plurality of locomotives. The method includes recording an identification pattern for each piece of rolling stock as each piece enters the railyard, compiling tracking data of the rolling stock as the rolling stock moves within the railyard using the respective identification patterns, and mapping the position of each piece of rolling stock as the rolling stock moves within the railyard.

Abstract: A method for identifying and determining the position of rolling stock within a railyard using a system that includes an AEI reader, a plurality of elevated electronic imaging devices and a tracking computer. The rolling stock includes a plurality of railcars and a plurality of locomotives. The method includes recording an identification pattern for each piece of rolling stock as each piece enters the railyard, compiling tracking data of the rolling stock as the rolling stock moves within the railyard using the respective identification patterns, and mapping the position of each piece of rolling stock as the rolling stock moves within the railyard.

Abstract: A method for determining the location of a vehicle whose movement is constrained to a route whose location is fixed and known, such as a train. An initial estimate of location is made based upon information contained in a route database based on distance traveled from a reset point. The accuracy of the estimated vehicle location is improved through use of just two global positioning satellites.