The East Coast Main Line Route Utilisation Strategy (RUS), published by Network Rail in February 2008, was the seventh RUS. RUSs are established by the Office of Rail Regulation (ORR) unless the latter objects within 60 days. A letter formally confirming establishment, but with some qualifications, was sent by ORR to NR in April 2008, and the RUS is included in NR's map as established. As with other RUSs, the ECMLRUS took into account a number of responses, including the Office of Rail Regulation (ORR).