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A track warrent is written instructions or orders over the radio allowing a train to occupy that section of track. This has since been replaced by Directional Travel, Automatic Block Signaling, CTC, and PTC signaling but it is still used in dark territory and on branch lines.
geomodelrailroader A track warrent is written instructions or orders over the radio allowing a train to occupy that section of track. This has since been replaced by Directional Travel, Automatic Block Signaling, CTC, and PTC signaling but it is still used in dark territory and on branch lines.
I'm not a railroader but I'll venture a guess. Track Warrants are an operating system using a standardized form authorizing track occupancy which is completed in accordance with instructions from the dispatcher. Automatic block signals are a safety overlay that indicate track occupancy but do not authorize it. Directional travel involves a general assignment of train movement over two roughly parallel lines and does not assign occupancy.
I doubt that I got a passing grade.
Track Warrant Control is a method to authorize train movements or protect men or machines on a main track within specified limits in a territory designated in the timetable. Where TWC is in effect, there may or may not be automatic block signals in effect.
Track warrants are also used to deliver track bulletins to trains, even where TWC is not in effect. This type of warrant lists all track bulletins in effect on the subdivisions the train might operate on. This warrant also has the "other specific instructions" box marked and instructs that the warrant only delivers the bulletins and does not authorize use of the main track.
Jeff
I like Jeff's description of track warrants. Its used to grant authority on the main track where authorized by the timetable.
Engineers have a nationwide license, but they have to be qualified on the rules of the railroad on which they operate. Not all railroads use the same rule book and even those using the same rule book have very different sets of special instructions that modify the rules based on the the policies of that railroad.
Not all railroads use track warrants, the NORAC (north east US) use "Form D" and Canadian roads use OCS. All are very similar, but not exactly the same.
Not all railroads use the same track warrant form. The UP has changed its track warrant several times since 1985, the latest a couple years ago, where the items on the warrant were rearranged in their order on the page, to put the most restrictive stuff first.
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dehusmanNot all railroads use track warrants, the NORAC (north east US) use "Form D" and Canadian roads use OCS. All are very similar, but not exactly the same.
Larry Resident Microferroequinologist (at least at my house) Everyone goes home; Safety begins with you My Opinion. Standard Disclaimers Apply. No Expiration Date Come ride the rails with me! There's one thing about humility - the moment you think you've got it, you've lost it...
tree68 dehusman Not all railroads use track warrants, the NORAC (north east US) use "Form D" and Canadian roads use OCS. All are very similar, but not exactly the same. Living near some dark territory on CSX, I hear a lot of their "EC-1," and I've copied a lot of NORAC Form D's. As noted, the information is basically the same, only the lines are changed.
dehusman Not all railroads use track warrants, the NORAC (north east US) use "Form D" and Canadian roads use OCS. All are very similar, but not exactly the same.
Living near some dark territory on CSX, I hear a lot of their "EC-1," and I've copied a lot of NORAC Form D's. As noted, the information is basically the same, only the lines are changed.
EC-1 is the CSX form that is used to copy a variety of 'Mandatory Directives' from the Train Dispatcher which also includes Track Warrant information when necessary.
EC-1's are used to communicate Slow Orders, Change of Status of Defect Detectors, Crossings that need 'manual' protection, Do No Pass orders and virtually any other happening that restricts the operation of a train.
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In Canada the term "track warrant" refers to a written authority in CTC-signalled territory, when the RTC needs to give a train further intructions the signals alone cannot.
Some examples would be authority to pass a Stop Signal, permission to manually operate a power (dual-control) switch, or "work" (move in both directions as required) within specified limits.
We simply call a Occupancy Control System (dark territory) authority a Clearance.
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