The Netherlands Transport Research Centre, Department for Statistics and Data Management (AVV/BG) WEGGEG, INWEVA and IMPULS files were used, when analysing motorways. Separate risks were calculated for all accidents (including accidents involving material damage only) and for accidents involving injury only. For the determination of the involvement of `heavy goods vehicles', separate risks were calculated for the following vehicle types: (1) delivery vans; (2) lorries without trailers attached; (3) lorry-trailer combinations; (4) and articulated lorries. When all vehicle types are grouped together, the total risk (including accidents involving material damage only) is approximately the same for all traffic volume classes on two-lane road stretches. Only in the highest traffic volume class the risk is approximately 30% greater. On three or four-lane road stretches, traffic intensities are higher: the lowest class is about the same as the highest class in the `two-lane road stretches' classification. The risk is also at about the same level as it is in this class. When looking exclusively at injury accidents, the levels for both the lowest and the highest traffic volume classes are higher than the intervening classes on not only the road stretches with two lanes but also those having three or four lanes. See also C 7533 and C 7535 - 7537.
Abstract