TRUCKS INVOLVED IN FATAL ACCIDENTS, CODEBOOK 1991. (VERSION JULY 8, 1993)

The report provides weighted and unweighted one-way frequencies for all vehicles in UMTRI's file of Trucks Involved in Fatal Accidents, 1991. The TIFA dataset provides coverage of all medium and heavy trucks recorded in the Fatal Accident Reporting System (FARS) file. TIFA combines vehicle, accident, and occupant records from FARS with information about the physical configuration and operation authority of the truck from the TIFA survey form. Most of the TIFA information is produced by telephone interviews with the driver, owner, or some other involved party. Some of the information is transcribed from police reports collected from the states or from the MCS 50-T report submitted by interstate carriers of goods to the Office of Motor Carriers (OMC) in the Federal Highway Administration.