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...
QUOTE: Originally posted by Willtajibnapis I think I understand the basic concept of TWC, but some of the details continue to elude me. Even professional railroaders have been unable to answer my questions (perhaps I am just dense). My basic problem is this: TW#1 Eng123 run from A to C. How this Eng123 get past C without stopping first ? All the examples I've seen show a TW#2 that looks like this: TW#1 is void (or complete) Eng123 run from C to D. The trouble is that TW#2 goes into effect as soon as it issued (and acknowledged etc.) so if it is issued before Eng123 gets to C, Eng123 has lost it's right to be on A -> C main track. If you wait until Eng123 is at C before issuing TW#2, Eng123 has to stop (unless C has a really loooong siding). One option, of course is to omit the words "TW#1 is void" from TW#2, but it is my understanding that failsafe procedures prevent the issuance of a TW from C to A (if not also from A to C) unless TW#1 is void/complete. The only solution I can thin of is to "cascade:" TW3# would void TW#1, not TW#2. But I have never seen that suggested anywhere. Anyone know the answer to this conundrum Will Tajibnapis
Dave H. Painted side goes up. My website : wnbranch.com
QUOTE: Originally posted by overall The way a understand it, a track warrant gives a train the right to occupy a track between two points and may give insturctions as to what to do at a certain point. Also, trains are indentified by the engine number of the lead unit rather than a train number. For example, a track warrant might go like this; Engine 4360, occupy main track between Adel and Sparks. Take siding at Sparks. Railroaders that operate under this system of track authority could give other examples. Hope this helps, George
QUOTE: Originally posted by Mark_W._Hemphill You can't say train order without saying timetable. They're hand-in-glove. The timetable is the instrument that grants authority for every train to occupy the main track on the territory governed by the timetable. The train order temporarily suspends or modifies the authority contained in the timetable, in order to resolve contingencies or circumstances. Track warrants are not used in conjunction with a timetable. The timetable still exists, but it is merely a record of locations and other instructions. The timetable in TWC territory does not grant authority. The track warrant grants the authority to the specific train(s) to which it is addressed to occupy the main track. Track warrants are more simple and easier to learn, but vastly less flexible than train order & timetable operation. They place a heavier workload on the dispatcher, who now must individually manage every train's progress, whereas under timetable & train order most trains manage their own progress.
"We have met the enemy and he is us." Pogo Possum "We have met the anemone... and he is Russ." Bucky Katt "Prediction is very difficult, especially if it's about the future." Niels Bohr, Nobel laureate in physics
Our community is FREE to join. To participate you must either login or register for an account.