The University of Michigan In-depth Vehicle Occupant Report UMIVOR manual : version 4 : instructions and interpretations for investigators, editors, and data analysts on the use of the UMIVOR.

This report documents the investigation practices, editing conventions and reference materials in preparing Multi-disciplinary Accident Investigation reported case vehicles for processing into the Transportation Research Institute's Accident Data Bank. The text documents the October 1, 1990 revised interpretations of each variable and includes expanded reference materials for use with the UMIVOR (University of Michigan In-depth Vehicle Occupant Report Form).