be left lined and locked in the reverse position: _ . Non-GCOR Track Warrant systems include the NORAC Form D Control System (DCS) which was later partly adopted by CSX to supplant its older DTC system. Use of track warrants on specific railroads 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), Forsyth Subdivision between Jones Jct. (a suburb of Billings, Montana) and Hysham, Montana. Unlike the El Paso Subdivision, 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 railroads, such as the Iowa Interstate Railroad, and many Class III railroads are dispatched completely by track warrant. 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 , or 56% of KiwiRail's tracks. See also Dark territory (North American terminology for unsignaled tracks) Direct traffic control Radio Electronic Token Block Rail terminology Train order References GCOR Rulebook Sixth Edition Trainweb.com. Suggested Track Warrant Form. General Code of Operating Rules. Accessed 2010-05-28. Carsten S. Lundstein (1998). Illustration of Track Warrant Control Data transmission Railway signalling block systems