The Office of Rail and Road (ORR), as the independent safety regulator and enforcement body for the Train Driving Licences and Certificates Regulations 2010, ensures train operating companies comply with the regime and can enforce against any non-compliance. Under the regulations, train operators are required to ensure train drivers employed by them comply with the occupational psychological fitness and medical requirements, which are conditions for obtaining a licence, and through a system of monitoring maintain the validity of train driving licences and certificates.