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I'm still in the planning/building phase, but I want to try to wire everything up right from the start.... so I have a question about how the prototype divides blocks on the main around industrial areas. Specifically, on my layout, I'll have two mainline crossovers in two separate areas. Actually, one will cross the main and the passing siding, and the in another area will cross just the main. So if I have a local switcher doing moves that will take him to the industry on the other side of the main, how do I 'protect' the crossing? Obviously the main will have to have two preceding signal blocks (one for an Approach signal and one for a Stop), but if the train on the main has already passed the first signal, and doesn't have time to stop for the second before crossing the crossover, how would the industrial switcher know there's an oncoming train? Will he have a signal on either side of the crossover giving a green or red signal? Or would he have to call the dispatcher for clearance each time he needed to cross? What's the normal prototypical practice? Regarding the wiring aspect of it, I have another question in the Layout Building forum regarding something else I want to try along the same lines as this, just doesn't qualify as a prototype question.
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