What should you note about the classes C, C1, D and D1 driving licence?

You answered correctly. For the classes C, C1, D, and D1 driving licences, all these points are important: The licence is only valid for a maximum of five years, meaning you must renew it regularly. You are allowed to apply for renewal up to six months before it expires, so you do not have to wait until the last moment. Finally, the exact date when your licence becomes invalid is written on the licence card itself, so you can always check when you need to renew. These rules exist to ensure that drivers of larger vehicles stay medically fit and up-to-date with traffic regulations. This knowledge helps you stay compliant and plan ahead, avoiding any period where your licence might accidentally expire.