You must always have your IDL along with your national license at all times.Omani nationals and residents who wish to drive abroad, need to apply for an IDP via the Oman Automobile Association.It is an internationally recognized translation of your driving license allowing motorists to drive outside of Oman legally, without the need for further tests and applications.The IDL is a United Nations convention, and a legal requirement. Our school match questionnaire - and free advisor services - can help you find your ideal US university.The International Driving License (IDL) or Permit (IDP) enables travelers and tourists to drive in many countries in a legal and safe way, without the trouble of being questioned by authorities or incurring fines.In other countries, you may need to get an International Driving Permit (IDP) for foreign drivers. citizen: Your state driver's license is valid while driving in Canada and Mexico. WHAT IS THE INTERNATIONAL DRIVING LICENSE? An International Driving Permit, or IDP, is a special license that allows motorists to drive vehicles in international traffic without further tests or. Check which license you need while driving outside the U.S.