Border, port and other inspection authorities increasingly use non-intrusive inspection - x-ray - technology to generate interior images of commercial vehicles. To investigate possible negative health effects of x-ray machines on drivers a scientific study on x-ray scanning of vehicles at borders was commissioned. The study shows that the process causes no danger to drivers health or safety. However, information on the scanning process is often non-existent and internationally accepted scanning procedures are not always followed. Lastly, the scientific study recommends developing an x-ray scanning certificate to accelerate and facilitate the process.