The technology will be installed on the 9.4km northern extension of Line 6 from Central Secretariat to Kashmere Gate and the 14km southern extension from Badarpur to YMCA Chowk in the satellite city of Faridabad. Cityflo 350 will also be deployed on the 11km western extension of Line 5 from Mundka to Bahadurgarh City Park. All three projects are part of the Phase 3 expansion of the Delhi metro network and are due to be completed by 2016.

Bombardier's contract covers the design, supply, and commissioning of the integrated train control and signalling system, including trackside and onboard equipment.

Cityflo 350 includes onboard automatic train protection (ATP) and automatic train operation (ATO), and displays both ATP and ATO information in the driver's cab. Track-to-train communication operates through audio frequency track circuits.

Bombardier has already equipped the initial sections of lines 5 and 6 with Cityflo 350 under a €30m contract awarded by DMRC in September 2007, and the system has been in operation on these lines since 2010.