My friend, who's not from the EU, has gotten an IDP (International Driving Permit) together with his driving license from his home country.
Can he still use his international driving permit after that? He's been living in Germany for over a year now. He cannot exchange his driving licence with a German one. He'd have to take the theoretical and practice tests again.
Is there a documentation somewhere that says you cannot use your international driving permit after 6 months of residence?