In recent events, a summer long construction of the SEPTA/CSX track separation is nearing completion. The double track between West Trenton, NJ and Yardley, PA has had a complete separation where they have made the Outbound track (Originally for the outbound SEPTA trains from Philadelphia) at the two stations for CSX only while the inbound track is now serving for both inbound and outbound trains along the SEPTA West Trenton Line.
Between Yardley and Woodbourne, the SEPTA line turn into 2 tracks but the CSX line remains 1 up to Woodbourne with an allowed crossover for CSX Q190 & Q191 to be able to enter the NS Morrisville Line to be able to get to Philadelphia
The process of Separation started in May 2015 which has caused most of the scheduled CSX trains to run overnight when there is no construction but is to have regular traffic by both railroads in late October 2015.
This is what I belive is to happen. So I can assure my information isn’t 100% accurate. But feel free to