Abstract: A method of adjusting one or more of braking parameters used in a braking function to control braking of a train includes determining an adjustment factor based on a joint stopping distance probability distribution, the joint stopping distance probability distribution representing the composite effect on stopping distance of a plurality of predetermined train characteristic parameters, each of the predetermined train characteristic parameters being variable, and applying the adjustment factor to each of the one or more of braking parameters. Also, a method of adjusting braking parameters that includes determining an adjustment factor based on a nominal value, a worst case limit value and a best case limit value of each of a plurality of predetermined train characteristic parameters, each of the predetermined train characteristic parameters being variable, and applying the adjustment factor to each of the one or more of braking parameters.

Abstract: A method of controlling braking of a train that includes obtaining in an on-board computer of the train a brake propagation delay time (Td), a brake build-up time (T) and a maximum brake rate (?max) for the train, and controlling braking of the train in the on-board computer by generating one or more braking signals for the train using Td, T and ?max. Also, a methods of determining for a train a profile velocity to a target position of a selected target, selecting a most restrictive target from among a plurality of targets for a train, and determining a plurality of braking parameters for a train having a train consist, wherein the parameters include a brake propagation delay time (Td), a brake build-up time (T) and a maximum brake rate (?max).

Abstract: A method of controlling braking of a train that includes obtaining in an on-board computer of the train a brake propagation delay time (Td), a brake build-up time (T) and a maximum brake rate (?max) for the train, and controlling braking of the train in the on-board computer by generating one or more braking signals for the train using Td, T and ?max. Also, a methods of determining for a train a profile velocity to a target position of a selected target, selecting a most restrictive target from among a plurality of targets for a train, and determining a plurality of braking parameters for a train having a train consist, wherein the parameters include a brake propagation delay time (Td), a brake build-up time (T) and a maximum brake rate (?max).

Abstract: A method of adjusting one or more of braking parameters used in a braking function to control braking of a train includes determining an adjustment factor based on a joint stopping distance probability distribution, the joint stopping distance probability distribution representing the composite effect on stopping distance of a plurality of predetermined train characteristic parameters, each of the predetermined train characteristic parameters being variable, and applying the adjustment factor to each of the one or more of braking parameters. Also, a method of adjusting braking parameters that includes determining an adjustment factor based on a nominal value, a worst case limit value and a best case limit value of each of a plurality of predetermined train characteristic parameters, each of the predetermined train characteristic parameters being variable, and applying the adjustment factor to each of the one or more of braking parameters.

Abstract: A method of controlling braking of a train that includes obtaining in an on-board computer of the train a brake propagation delay time (Td), a brake build-up time (T) and a maximum brake rate (?max) for the train, and controlling braking of the train in the on-board computer by generating one or more braking signals for the train using Td, T and ?max. Also, a methods of determining for a train a profile velocity to a target position of a selected target, selecting a most restrictive target from among a plurality of targets for a train, and determining a plurality of braking parameters for a train having a train consist, wherein the parameters include a brake propagation delay time (Td), a brake build-up time (T) and a maximum brake rate (?max).

Abstract: A vital railway signal link for passing DC signals between a first terminal location and a second terminal location. A transmitter at the first terminal location receives a DC input signal and responsively produces a light signal modulated at a preselected frequency. The light signal is conducted through an optical fiber to the second terminal location. There, a receiver detects the light signal and produces a DC output signal. The receiver contains discriminator circuitry preferably including a bandpass filter to prevent light signals other than those modulated at the preselected frequency from giving an output signal.