The support files include the children group.csv and the elderly group.csv, which are categorised according to Table 1.

The num in the data represents the number of accidents at the location; the hdm represents the accident location; the con represents the road safety control; the roadty1 represents the road alignment; the roadty2 represents the type of intersection section; the roadty3 represents the road class; and the iso represents the type of segregation. (ZIP)