A surveillance witness audit of Delhi Metro was recently conducted by the United Kingdom Accreditation Service (UKAS), which said in its report that DMRC's housekeeping and operational controls are world-class.

The UKAS is the sole national accreditation body recognised by the government to assess, against international agreed standards, organisations that provide certification, testing, inspection and calibration services.

"The fact that DMRC included occupational health and safety in an integrated management system is particularly laudable," UKAS auditor Andrew Marlow said.

He said, "DMRC's effharvesting and energy saving are a model for other big organisations to follow."

Commenting on the report, DMRC CPRO Anuj Dayal said, "It is the management style which is unique. It is based on practical experience and experiences of its leaders. The credit goes to the managing director and entire DMRC team."

Dayal said due to DMRC's standards, countries like Pakistan, Syria, Ireland, Sri Lanka and Vietnam have interacted with DMRC officials for metro systems.

DMRC officials last month visited Lahore in Pakistan on the request of authorities in that country to provide suggestions on establishing a metro system there.