From the data of the NTS in the UK and Germany, some comparisons between the composition of the overall population and of the population of car drivers can be made. Comparisons are summarized in the figures below (Figure to Figure ).They show that even if there are some differences, the profile of the two populations is reasonably similar. Therefore, it was assumed that the profile of people holding a driving license and driving a car does not significantly differ from the universe of the people across age profiles. This way the population over 18 years of age could be.
