The Delhi Metro network's grey line corridor, which will connect Dwarka to Najafgarh will soon be thrown open to the public. The Commissioner of Metro Rail Safety (CMRS) has accorded a mandatory approval for starting passenger operations, tweeted DMRC. The exact date for commencement of operations shall be communicated shortly. The over 4.2 km-long Dwarka-Najafgarh corridor of the Delhi Metro consists of three stations - Dwarka, Nangli and Najafgarh. Dwarka and Nangli stations are elevated, while Najafgarh station is underground.

Trial runs on the section had begun in July. "During the trial runs, the interaction of the metro train with physical infringements (civil structure) were checked to ensure that there is no physical blockage during the movement of the train on the track," the DMRC said.

The Delhi Metro Rail Corporation had earlier said the corridor is being extended by another 1.18 km till Dhansa Stand which is slated for completion by December 2020.

The Grey Line will be connected with the Blue Line, which connects Dwarka Sector-21 to Noida Electronic City and Ghaziabad’s Vaishali in Uttar Pradesh.

The Delhi Metro's total operational network at present stands at over 343 km with multiple corridors and 250 stations having its footprints in Delhi and various neighbouring cities.

An average of about 28 lakh commuters use the Delhi Metro every day.