Samenvatting
In order to assess large truck safety, information is needed on vehicle exposure to accidents (travel) as well as on involvement in accidents. Since 1979, the University of Michigan Transportation Research Institute (UMTRI) has collected detailed data on every fatal large truck accident in the US, about 5000 cases a year. With the completion of the first comprehensive large truck exposure data survey, by UMTRI, we will be able to go beyond past analyses of large truck accidents. The National Truck Trip Information Survey (NTTIS) was initiated in late 1985. Data collection was completed in February 1987.