Editing Track Warrant Control (section)

==Use of track warrants on specific railroads==
{{Unreferenced section|date=December 2018}}
The [[BNSF Railway]] uses track warrants on its [[El Paso Subdivision]] which runs from [[Belen, New Mexico]] to [[El Paso, Texas]], with the dispatcher in [[Fort Worth, Texas]]. There are no electrical signals on the route.  BNSF also uses TWC (Track Warrant Control) between Williams, AZ ([[Seligman Subdivision]]) to Phoenix, AZ ([[Phoenix Subdivision (BNSF Railway)|Phoenix Subdivision]]), Forsyth Subdivision between Jones Jct. (a suburb of [[Billings, Montana]]) and [[Hysham, Montana]]. Unlike the El Paso Subdivision, [[Automatic Block Signal|ABS]] is used. And on the Madill Subdivision between Denison, TX and Irving, TX with an ABS signal overlay on the northern ten or so miles between Denison and Sherman, TX. Track Warrant Control is also used in many other lower to medium traffic volume sections of the BNSF system, sometimes with an automatic block signal system overlay, and on the other class one railroads as well. Some smaller [[Class II railroad]]s, such as the [[Iowa Interstate Railroad]], and many [[Class III railroad]]s are dispatched completely by track warrant.

[[List of Canadian railways|Canadian railways]] use a similar system called ''Occupancy Control System'' (OCS), in which movements are controlled via clearances issued over the radio from the Rail Traffic Controller to the train. The system is in wide use on lines that aren't installed with [[centralized traffic control]] (CTC).

In Australia & NZ:
The New South Wales Country Regional Network (CRN) uses electronic track warrants (train orders) on 2,400km of track.  Functionality includes 'proximity' warnings and 'out of authority' alarms to improve driver situation awareness.
The Australian Rail Track Corporation (www.artc.com.au) uses track warrants on several thousand kilemtres of single track line.

[[KiwiRail]] in New Zealand also uses track warrants; in 2008 they were required on {{Convert|2255|km|abbr=on}}, or 56% of KiwiRail's tracks.<ref>{{Cite web |title=Report 08-108, express freight Train 845, track warrant overrun, Reefton–Cronadun, 13 August 2008 |url=https://www.taic.org.nz/sites/default/files/inquiry/documents/08-108%20FINAL.pdf |website=Transport Accident Investigation Commission}}</ref>