SCR has its boundary upto Katpadi station itself .SR boundary starts from the Home signal of the katpadi station. Even though AJJ Bypass line is there many passenger Trains are pass through KPD-TPTY only .
Even as per my knowledge AJJ bye-pass is line is using for major of Goods traffic only upto RU than Passenger trains. Since TPTY-KPD section is not fit for Goods due to high gradients ,they hav to look into the matter steps to be taken to complete the project