All OC lines use 160.215 MHz for road and dispatcher communications.
C&N Subdivision:
The C&N Subdivision is the former Baltimore & Ohio main line from Wheeling, WV. Jointly owned and operated by B&O and Pennsylvania (and later CSX/Conrail and their predecessors), the 50% portion held by Conrail eventually transferred to Ohio Central. The 50% portion held by CSX was sold to Ohio Central in October 2004, along with the other lines out of Newark (Central Ohio Subdivision and Lake Erie Subdivision). OC has considerable local business in the Columbus area, as well as Heath/Hebron and Newark.
Columbus & Ohio River Line:
The Columbus & Ohio River Line is the former PRR mainline between Newark and Columbus. Sold to the State of Ohio in the early 1990s, Ohio Central was made designated operator, and has made a dramatic turnaround in the fortunes of this formerly declining piece of railroad. It today carries a fair amount of manifest traffic, steel and coal.
Neilston Line:
The Neilston Line is all that remains of the former PRR main line between Columbus and Cleveland. Originally the Cleveland, Akron and Columbus Railroad, it was once the primary route between these cities for PRR. Downgraded and gradually abandoned after the 1968 Penn Central merger in favor of the mostly parallel New York Central route, little remains of the line; the Neilston Line and the portion between Hudson and Akron are the only parts remaining. Both sections are now held by regional or short line railroads.
The Neilston Line joins the C&N Subdivision under St. Clair Avenue, just northeast of downtown Columbus, and runs via Dynamite Hill to Grogan Yard. Grogan Yard was once a major PRR classification yard; the only remaining portion is now used by OC to hold local cars while switching industries on the Neilston Line.
Western Branch/West Virginia Branch (161.070 MHz):
The Western Branch and West Virginia Branch are parts of the former T&OC Western Branch, which ran between Thurston and Toledo. Split by Conrail into different operating segments, the lines south of Scioto Tower went to Norfolk Southern after the 1999 CSX/Conrail/NS merger. The Western Branch portion runs between Scioto and Bannon, junction with the Columbus District, and is the only route for NS trains between Buckeye Yard and the Columbus District. As such it hosts several scheduled trains each day in addition to local and coal trains.
South of Bannon the line becomes the West Virginia Branch, which runs through Southeast Ohio and West Virginia to Charleston. It carries mostly coal and chemical traffic.