Citation

Uhlaner JE, Goldstein LG, van Steenberg JN. Highw. Res. Board bull. 1952; 60: 1-16.

Copyright

(Copyright © 1952, National Research Council (U.S.A.), Highway Research Board)

DOI

unavailable

PMID

unavailable

Abstract

Accident records and road tests were considered and abandoned as bases for a criterion of safe driving in the army situation. Observations and judgments of drivers, supervisors, and associate drivers were then considered and an instrument, including rating scales and a check list, was developed for their quantification. A population of 189 drivers was rated on 11 experimental scales by an average of 4.8 supervisors and 12.5 associates. Of the 11, four scales were finally chosen on the bases of (1) reliabilities, (2) correlations with an accident- responsibility index, (3) intercorrelations among the scales, and (4) results of a factor analysis of these intercorrelations. The same raters were asked to indicate, for each of 105 descriptions of unsafe driving habits, how ratable (observable) the behavior is and how important it is to safe driving. The 15 statements adjudged most ratable and most important were selected for the final check list. The mean rating on the four scales receives a double weight and the mean number of checks received has unit weight in the composite criterion score.