Abstract: A signal aspect enforcement method for a rail vehicle includes determining, by an on-board controller on the rail vehicle, a position of the rail vehicle; determining, by the on-board controller, whether a first signal aspect for a signal matches a second signal aspect for the signal; and determining, by the on-board controller, at least one of a route of the rail vehicle or a speed limit of the rail vehicle when the first signal aspect matches the second signal aspect. The first signal aspect is determined from first data from first system on the rail vehicle, and the second signal aspect is determined from second data from a second system on the rail vehicle, which system is different from the first system used to determine the first signal aspect.

Abstract: A method for regulating an electrical power source, comprising the steps of detecting for one or more predetermined conditions associated with a load power of the electrical power source, whereupon the one or more predetermined conditions is detected, acquiring electrical characteristics of the electrical power source to determine a global maximum load power value arranged to approximate a true maximum load power of the electrical power source, and processing the global maximum load power value to determine a local maximum load power value of the electrical power source, wherein the local maximum load power value is arranged to be more accurate in approximating the true maximum load power of the electrical power source when compared with the global maximum load power value.

Abstract: A method for regulating an electrical power source includes the steps of detecting for one or more predetermined conditions associated with a load power of the electrical power source, whereupon the one or more predetermined conditions is detected, acquiring electrical characteristics of the electrical power source to determine a global maximum load power value arranged to approximate a true maximum load power of the electrical power source, and processing the global maximum load power value to determine a local maximum load power value of the electrical power source, wherein the local maximum load power value is arranged to be more accurate in approximating the true maximum load power of the electrical power source when compared with the global maximum load power value.