Cavortingcheetah if you are interested in doing a Rater course the ATNS training academy offers the course.It a week long course that teaches you how to conduct the interview etc....Know it's a bit of a slap in the face for guys who have been talking on the radio for years now with no incident , but I think Icao is just trying to eliminate as many factors from the incident/accident equation as they can.Especially with regard to the international increase in runway incursions.I'm also getting the impression that stop bar lights will be utilised now more on a permanent basis rather than just in bad weather as another preventative measure.