The exterior has been constructed using a special technique called Aluminium Composite Panel. Several stations have parking facility.

Adds Dayal: " The line will pass through the Akshardham temple where the Commonwealth Games Village is being built -- thus linking the upcoming Commonwealth Games Village as well. Noida authorities have planed to integrate the line with a light rail transit system. We are preparing a detailed project report on that."

YAMUNA BANK- ANAND VIHAR CORRIDOR
More than 85 per cent of civil work is complete on this 6.5- km corridor, expected to open in October. It will pass through residential, commercial and institutional areas along Vikas Marg in east Delhi and cater to more than 1 lakh commuters daily.

All its five Metro stations are on an elevated stretch. " We have undertaken property development at Karkardooma and Anand Vihar Metro stations," says Dayal. " The Karkardooma station has five floors, including the basement. The basement will be used for general parking. Property development will be carried out on the ground floor, first floor and concourse, while the platform will be on the top floor." The Anand Vihar Metro station will be unique, integrating three transport systems - the Metro, the Indian railways and the inter- state bus service.

DMRC is building two of Phase II's longest spans of 70 m consecutively over the Karkardooma flyover. It has also had to provide an elevation of 6.1 m above the flyover. The line here is thus placed nearly 19 m above ground level - the highest point in the entire Metro system.

INDERLOK- MUNDKA CORRIDOR
This 18.5- km stretch with 16 stations will have 15 elevated and one grade stations catering to about 1.5 lakh people daily. Work was initially expected to finish in March 2010, but the line will open nearly four months ahead of schedule in December 2009.

" All stations will have side platforms except the Inderlok station, which will have an island platform," says Dayal. " All stations have been planned for six coaches only. At Peera Garhi, the alignment will be above the flyover, which is 8 m from ground level. So the height of the Metro elevated viaduct at this location will be 16 m from the ground and the depot on this line will be at Mundka." This corridor will connect Line- 1 and Line- 3. Trains will run on standard gauge, so there won't be any direct interchange of Line- 1/ 3 with this line. The stations will only be connected by footover bridges and walkways.