Complex sentence: Except on Orange Line trains, passengers heading southbound are required to disembark at the PSU South/5th & Jackson station, from where trains then continue south to the turnaround loop located just beyond the station, where layover is taken.
Split into simpler sentences: Except on Orange Line trains, passengers heading southbound are required to disembark at this station. From here, trains then continue south to the turnaround loop located just beyond the station, where layover is taken.