Going to a movie the other night, my friends and i were stuck on woodbourne road where CSX's trenton line crosses. The yard is off to the right in this instance. We sat in stationary traffic right next to the commuter station for about 15-20 minutes as a train on the connector to NS's line there (which to the east leads to morrisville yard) seemed to move back and fourth. I have a couple of questions. One, what is the function of this maneuvering, is it possible to have grade separation of woodbourne road at both crossings, plus why does this take so long, and why at the tail end of rush hour vs at like 2-3 am when the roads are fairly empty? It's not like i'm mad at the railroads for doing their job as some of my friends were, i am just curious. Thanks for any/all useful info!
Train approaching, please stand back.