Istanbul Metropolitan Municipality's 1st city tunnel, the "Kağıthane-Piyalepaşa" tunnel; Electrical, Automation and tunnel control system works were made by DELTA PROSES.

 Under the project, the design and manufacture of all the MCC and distribution boards - PLC and SCADA system has been prepared by the DELTA PROSES. "Kağıthane-Piyalepaşa" tunnel 'has been commissioned in Dec. 2009 with the participation of our Prime Minister Mr.Erdoğan.