<P> The medical assessment for these certificates must be undertaken by an accredited medical provider . In the case of PTS this is authorised by the "link up procedure" under the authority of Network Rail . </P> <P> Providers of this service are registered appropriately and regular audit is undertaken to ensure that they meet the quality control levels for the specific standards of performance and training needed to reliably undertake the medical assessments . </P> <P> Since 2006 the standards for a PTS have been regulated by the Office of Rail and Road </P> <P> Basic medical assessment for national rail PTS involves the following medical modalities and components . </P>

A valid sentinel card with pts and ac