| Access rights | Rights to use railway infrastructure with the purpose of granting a company the possibility of operating trains. |
| Bypass | It is a new rail line that replaces or complements an existing one. Bypasses may be built to avoid difficult crossings, a city, a built-up area, town, etc. |
| Freight yards | Areas where freight cargo is managed, as it is loaded and unloaded from the trains. |
| Haulage rights | An agreement where one railroad company carries traffic on its line and on its trains on behalf of another company. The owner of the line receives a fee for providing access to the other company. The main distinction between haulage and trackage rights is the company who operates the trains. |
| Interchange traffic | Freight cargo that is exchanged from one railroad to another. |
| Interline traffic | Traffic that originates on one concessionary and terminates on another concessionary. An interline move involves more than one concessionary. |
| Rail gauges | The minimum perpendicular distance between the inner faces of two rails. |
| Slots | It is the capacity of a company to use its trains on a specific stretch of track during a given period of time. |
| Trackage rights | An agreement under which a tenant railroad gets rights from the owner of the track’s rights to provide transportation service over the joint facility and it is the sole responsible for loss or damage of the freight. The tenant pays a fee to compensate the owner for track maintenance, train dispatching, among other expenses. |
| Trunk lines | Main supply channels, usually handle long-distance traffic. |