The registered owner/holder of an unbraked trailer with a permitted total weight not over 750 kg which has not been registered in the past in a foreign country, shall submit this trailer for a vehicle test at the latest within a period of:
2 years after the first trailer registration and then regularly every 2 years at the latest.
6 years after the first trailer registration and then regularly every 4 years at the latest.
4 years after the first trailer registration and then regularly every 4 years at the latest.