Statistical Methods for Analyzing Accident Risk-A Prototype System

This paper discusses the problems and prospects for a system for statistically analyzing relationships between pre-crash factors and accidents using accident data from the National Accident Sampling System (NASS). The bulk of the paper presents a description and tentative results from a field trial of a prototype system in Monroe County, Indiana, using exposure data newly collected for the field trial and pre-existing accident data. The authors concluded that the development of such an analysis system, although difficult, was feasible if the objectives of such a system took into account the scarcity of accident data.