Road crash statistics by themselves don't necessarily tell us who is most at risk on the road since they don't take into account the amount of driving, walking, riding, etc. By merely considering the total number of crashes that drivers have, it could be concluded that drivers less than 15 years old are very safe on the road because there are very few crashes involving them. In fact, this is really a result of there being only a small number of this age group actually driving as it is illegal for them to be doing so.
In the following section, we make use of information about the amount of travel being done by various groups in order to see who is at greater or lesser risk given the amount of travel they do. Risk can be expressed as road crashes or injuries occurring per km travelled or per hour of travel, or even per road crossed in the case of pedestrians.