Regulation 9 Period of validity of goods vehicle test certificateI1
Northern Ireland
A goods vehicle test certificate issued as a result of a first test, a periodical test, or a re-test following a first test or a periodical test, or an appeal by a person aggrieved by a determination on a first test, a periodical test or on a consequent re-test of a vehicle, shall be valid from the date of its issue for a period of 12 months.
Within the appropriate period after a goods vehicle test certificate is issued, but not earlier than 6 weeks before the end of that period, a further goods vehicle test certificate is issued as respects the same vehicle, the further certificate shall be treated for the purposes of these Regulations as if issued at the end of the said appropriate period.
In this regulation “appropriate period” means a period of 12 months.