etihad rail db is a certified and integrated heavy-rail operations & maintenance (o&m) service provider in the uae. the company was set up in 2013 as a joint venture between etihad rail (51%), the developer of the uae's national railway network and deutsche bahn (db) (49%), europe's largest railway operator and infrastructure owner. etihad rail db is responsible for the operations and maintenance of stage one of the uae's national railway network for etihad rail’s primary customer, the abu dhabi national oil company (adnoc). etihad rail db concluded an operations & maintenance (o&m) agreement with etihad rail in august 2013.