J
- JARUS
- Joint Authorities for Rulemaking on Unmanned Systems
- Jetty
- Structure extending into water used as a landing stage
- Jumper cable
- Flexible cable bundles that run between rail vehicles. SRx carriages have: a 74VDC jumper, mainly used for driving control between the locomotive and SRV cabs; a 24VDC jumper used for carriage control (doors, alarms, park brakes, etc) and TMS; and a 400VAC jumper used for high-powered systems (carriage heaters, toilets, café appliances, etc).
- Junction
- A place at which two or more rail routes converge or diverge.
- Junction points
- A track component that provides a path for a wheel to transfer from one track to another.
- Just culture
- A just culture is a safety culture that promotes accountability and fairness. It encourages people to report errors and share information, without fear of blame or retribution, in order to improve safety performance. Globally, many safety-critical industries, such as aviation, maritime, oil and gas. and healthcare, promote just culture.