Generally speaking in the ''western world'', as long as the vehicle conforms to the roadworthiness regulations of the country of registration it's fine. -but it must have a current (in date) roadworthiness certificate ( like an MOT), be insured in the country of registration for the countries it is travelling through and registered to the owner/driver, and have paid any annual taxes ( road fund licence). If you are concerned about your driving licence accreditations, it does depend on where your licence is issued. If you have a Thai licence you will definitely need an IDP ( International driving permit) issued in Thailand which shows the unrestricted weight permit. If you have a European licence with only cat B or B and C1, then you might have a problem, ( you need to check your licence on line with the country of issue because you could be O.K. up to 7.5tons depending on your categories and date of licence) . Don't forget that in Europe now if any part of the legal requirements for driving the vehicle is not correct, ( licence; roadworthiness cert;insurance;taxation) then your insurance automatically become invalid and could be serious in the event of an incident. Police also now impound vehicles immediately if you haven't got the right licence categories. Foreign registered vehicles from outside Europe always attract attention.

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