A system may include a controller with one or more processors. The controller may determine the wheel size of a wheel of a vehicle during a trip. The one or more processors may communicate a message associated with the wheel size to an off-board device when the wheel size is below a threshold size.

A hydrogen supply system comprises a hydrogen station placed near a railroad track and configured to supply hydrogen to a moving body that is driven with a fuel cell used as an electric power source; and a train provided with a hydrogen tank and configured to run along the railroad track and transport hydrogen to the hydrogen station.

A hydrogen supply system comprises a hydrogen station placed near a railroad track and configured to supply hydrogen to a moving body that is driven with a fuel cell used as an electric power source; and a train provided with a hydrogen tank and configured to run along the railroad track and transport hydrogen to the hydrogen station.

Systems, devices, and methods for passing railcar tank cleaning systems through the opening and mounted to existing manways. The invention can extend horizontally more than 25 feet and clean rail cars up to and beyond approximately 102 inches in diameter for manual, automated, or semi-automated programmable railcar tank cleaning systems, devices and methods for providing safe and efficient methods for breaking up oil, tar, chemical, radioactive, hazardous, or any other liquid, solid, or sludge waste inside rail tank cars and the like with nozzles which utilize fluid jets to break up, liquefy, and motivate tank material. The programmable railcar cleaning system can be a standalone, independent unit or integrated into new designs and/or existing systems. Simplified programming and user interface allow an operator to remotely operate the system. The various capabilities of this invention allow cleaning in a quicker and more efficient manner. The system is hydraulically controlled and can work in the presence of flammable vapors and dust.

Systems, devices, and methods for passing railcar tank cleaning systems through the opening and mounted to existing manways. The invention can extend horizontally more than 25 feet and clean rail cars up to and beyond approximately 102 inches in diameter for manual, automated, or semi-automated programmable railcar tank cleaning systems, devices and methods for providing safe and efficient methods for breaking up oil, tar, chemical, radioactive, hazardous, or any other liquid, solid, or sludge waste inside rail tank cars and the like with nozzles which utilize fluid jets to break up, liquefy, and motivate tank material. The programmable railcar cleaning system can be a standalone, independent unit or integrated into new designs and/or existing systems. Simplified programming and user interface allow an operator to remotely operate the system. The various capabilities of this invention allow cleaning in a quicker and more efficient manner. The system is hydraulically controlled and can work in the presence of flammable vapors and dust.

A method of automatic battery swapping control for a rail transit vehicle is applicable to a rail transit vehicle automatic battery swapping system including a ground battery swapping device and a rail transit vehicle. The method includes: receiving a battery swapping signal, and in response to the battery swapping signal, blocking traction of the rail transit vehicle; communicating the in-vehicle wireless communication device with the ground wireless communication device, to enable battery swapping for the rail transit vehicle; receiving a battery swapping completion notification sent by the battery management system; and disconnecting the in-vehicle wireless communication device from the ground wireless communication device, and lifting the vehicle blockade of the rail transit vehicle.

A method of automatic battery swapping control for a rail transit vehicle is applicable to a rail transit vehicle automatic battery swapping system including a ground battery swapping device and a rail transit vehicle. The method includes: receiving a battery swapping signal, and in response to the battery swapping signal, blocking traction of the rail transit vehicle; communicating the in-vehicle wireless communication device with the ground wireless communication device, to enable battery swapping for the rail transit vehicle; receiving a battery swapping completion notification sent by the battery management system; and disconnecting the in-vehicle wireless communication device from the ground wireless communication device, and lifting the vehicle blockade of the rail transit vehicle.

A method of repairing a rail wheel including removing a selected segment of a rim of the rail wheel to provide a remaining segment having a first engagement surface, and providing a replacement workpiece including a replacement body element having a second engagement surface formed to mate with the first engagement surface. The replacement workpiece is positioned to define a predetermined gap between the first and second engagement surfaces. One or more heating elements are positioned in the predetermined gap, for induction heating, in a non-oxidizing atmosphere, of first and second heated portions of the remaining segment and the replacement workpiece, and the first and second engagement surfaces, to a hot working temperature, for plastic deformation thereof. The heating elements are removed, and the first and second engagement surfaces are engaged for plastic deformation of at least part of the first and second heated portions and the engagement surfaces.

A method of repairing a rail wheel including removing a selected segment of a rim of the rail wheel to provide a remaining segment having a first engagement surface, and providing a replacement workpiece including a replacement body element having a second engagement surface formed to mate with the first engagement surface. The replacement workpiece is positioned to define a predetermined gap between the first and second engagement surfaces. One or more heating elements are positioned in the predetermined gap, for induction heating, in a non-oxidizing atmosphere, of first and second heated portions of the remaining segment and the replacement workpiece, and the first and second engagement surfaces, to a hot working temperature, for plastic deformation thereof. The heating elements are removed, and the first and second engagement surfaces are engaged for plastic deformation of at least part of the first and second heated portions and the engagement surfaces.

A separation device is provided for use with a locomotive sanding system, and includes a body defining a chamber and having an intake port connected to an inlet tube with a free end spaced from a floor of the body, an outlet port at an opposite end of the body from the intake port, a sand fill hose connected to the outlet, and a sand nozzle connected to the sand fill hose.