Association of Track Day Operators

ATDO was created in 1999 in response to fears that the track day industry might be subject to increased scrutiny from the authorities if it didn't impose it's own standards.

It boasts about 30 members including most of the main track day operators in the UK.

The organisation is now recognised by some insurers who will only cover days operated by ATDO members (see Insurance)

Link: www.atdo.co.uk