There is a signal bridge over the Conrail tracks between Wales and Drouillard roads. This is another clue that a Conrail train is coming. South bound CSX trains can be heard blowing their horn for grade crossings for several miles before they reach the junction. Northbounds can be seen across the farm fields for some distance, before they get to the Wales Rd. If you are at one of the Conrail crossings, you'll have time to relocate to the CSX tracks.
Scanners can be helpful.
Conrail has a hotbox detector located about three miles east in Millbury. This detector reports the status of the train, the axle count, and which track the train is on. Track one is the westbound track, track two is for eastbounds. This is the usual arrangement, but the dispatcher will sometimes route a faster train around another train on the opposite track. Other than that, Conrail train crews stay pretty quiet, resulting in some trains sneaking up on you.