The final leg of Q581, autos for Cayce, SC, runs from Greenwood to Columbia with manifest tacked on as local F779. It travels the CN&L Sub from Clinton to Columbia. The CN&L sub still features a few legacy signals dating from a trackage rights swap with NS that installed a connection to the V-line and made a lengthy siding out of the former NS line. Here, the southbound train passes the northbound approach to South Newberry. The signal is approach lit and comes up as yellow on the upper light as the train passes, and changes to green on the lower light once the train is completely on the approach circuit.
