Siemens Industry, Inc.

Siemens Mobility Gmbh

Jay Yocum

Brian Harp

Holger Schmidt

Stefan Fritschi

A railway road crossing warning system () including a railway road crossing control unit () that may be selectively set to a primary or a secondary mode of operation is provided. In the primary mode of operation, the railway road crossing control unit is responsive to a primary activation signal () received from a primary activation-signal source (), such as a positive train control (PTC) system. In the event the primary activation signal from the primary activation-signal source is not available, railway road crossing control unit () is set to the secondary mode of operation, where the railway road crossing control unit is responsive to one or more signals () received from a secondary activation-signal source () including a railway-vehicle sensing system () electrically-decoupled from a railroad track (). Disclosed embodiments maintain operational robustness in the presence of changing weather and avoid variable electrical ballast conditions that otherwise could develop across the rails, while providing a cost-effective and reliable backup capability for a PTC-started crossing system.

Railway road crossing warning system with sensing system electrically-decoupled from railroad track

A track test load device includes an inductor assembly with simulated track inductors simulating a rail track, a connector assembly for connecting the inductor assembly to a constant warning time device, and a multi-way-switch-assembly with a multi-way-switch with multiple switch positions. The multi-way-switch assembly is operably coupled between the inductor assembly and the connector assembly, wherein a switch position of the multi-way-switch corresponds to an operating mode of the track test load device. Furthermore, a track test load system and a method for testing a constant warning time device are disclosed.

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Nabb, IN, United States of America

Jay Yocum