Notwithstanding the provisions of Annexes I and II, Member States may:
bring forward the date for the first compulsory roadworthiness test and, where appropriate, require the vehicle to be submitted for testing prior to registration;
shorten the interval between two successive compulsory tests;
make the testing of optional equipment compulsory;
increase the number of items to be tested;
extend the periodic test requirement to other categories of vehicles;
prescribe special additional tests;
require for vehicles registered on their territory higher minimum standards for braking efficiency than those specified in Annex II and include a test on vehicles with heavier loads, provided such requirements do not exceed those of the vehicle’s original type-approval.