Samenvatting
The most frequent and crucial impediments in the area of highway safety evaluation are seen to be: (1) a lack of understanding of evaluation; (2) an unwillingness to have programs undergo evaluation if an understanding of the process does exist; (3) a paucity of trained personnel to carry out evaluations, and (4) the existence of inadequate tools, procedures, and data bases for establishing sound evaluative research procedures. Recommendations are made detailing ways in which these deficiencies might be overcome and future highway safety evaluations improved.