Form: Declare a public service vehicle (PSV) does not need a tachograph

You must declare if a public service vehicle (PSV) is exempt from needing a tachograph when you take it for its annual test (MOT).

from Driver and Vehicle Standards Agency - Activity on GOV.UK https://www.gov.uk/government/publications/psv-tachograph-exemption-declaration-form
via Alans Driving Lessons Batley