- Independent brake: The common name for the braking system that applies or releases the brakes of a locomotive independently from its train; sometimes called the locomotive brake in layman's terms.
- Infill station (sometimes in-fill station): A train station built on an existing passenger line to address demand in a location between existing stations.
- Injector: A device to force water into a steam locomotive's boiler by steam pressure.
- Interchange: Any track or yard where rail cars are transferred from one carrier to another.
- Interlocking (US): Any location that includes a switch or crossing of two tracks, derived from the early practice of installation of a system of mechanical equipment called an interlocking plant to prevent collisions. See also signal box. Interlocking is also the term for the actual mechanical or electrical apparatus that prevents switch/points and signals from being operated in ways that would allow for conflicting train movements.
- Intermodal freight: Moving goods by more than one type of vehicle. Intermodal freight can be transported using shipping containers which can easily be transferred among railroad flatcars, ships, airplanes, and tractor-trailer trucks.
- Intermodal passenger: Moving people by more than one type of vehicle.
- IRJ, IBJ: Insulated rail joint/insulated block joint. Rail joints incorporating insulation to isolate individual track circuits.
- Island platform: A railway platform that has tracks along the full lengths of both sides.
|
|