The MOT test (or simply MOT) is an annual test of vehicle safety, road-worthiness aspects and exhaust emissions required in the United Kingdom for most vehicles over three years old. In Great Britain MOT testing centres are regulated and licensed by the Department and Transport and DVSA for the purpose, and the individual testers carrying out the inspections also have to be trained and certified. The main purpose of the MOT test is to check if a vehicle meets the main UK road safety standards. The decision to pass or fail each presented vehicle comes down to the discretion of the tester following the guidelines issued by the DVSA. The inspection manual can be found online.[16] The full details must by law be provided on request by all garages licensed to perform MOT tests and are currently published in DVSA's leaflet The MOT Test and You.