In association with four other companies comprising the General Consultant Consortium joint venture, PB provided program management services for Phase 1 of the Delhi Metro, along with other services including:

• Development of preliminary design;
• Identification, specification and procurement;
• Detailed design management;
• Preparation of tender documents;
• Tender review and negotiations;
• Interface management;
• Project controls;
• Construction supervision; and
• Supervision of installation, testing, and commissioning of the system.

In addition, PB was specifically responsible for oversight of contract administration, signal systems, tunnel ventilation and vehicle acquisition. The system's vehicles feature state-of-the-art-design, with alternating current (AC) propulsion, environmental control systems and robust interior materials to withstand projected heavy usage. Realizing the great potential for the system's growth and expansion, the Delhi Metro's communications systems are also state-of-the-art.

The system's rapid transit corridor required the first use in India of bored tunneling for urban construction. Three tunnel boring machines were used―one for hard rock/quartzite and two for clay. An Earth Pressure Balance Machine was used for soft soil. The Delhi Metro is also the first transit system in Southeast Asia to utilize Smart Card fare-collection technology.