The 2 kilometers stretch between Golden Rock and Tiruchirappalli Junction is operating with Triple line, as Both Chord Line and Main Line runs parallel between these stations and for extensive shunting and maintenance purpose due to the proximity of Central Workshop, Diesel loco shed and a newly established electric locomotive trip shed, the entire division has single lines except for Trichy-Villupuram Section of Chord Line which has been completely Upgraded to Double Line Electrified Section (FEDL).