Materials intended for driving knowledge test development use by operational licensing and education agencies were prepared. Candidate test items were developed, using literature and operational practice sources, to reflect current state-of-knowledge with respect to principles of safe, efficient driving, to legal regulations, and to traffic control devices. Such multiple-choice item "pools" were developed for testing drivers of Class C (passenger car and light truck), Class M (motorcycle), and Classes A and B (bus and truck) vehicles, with the pools containing 1313, 282, and 583 items, respectively. Subsequent to item review by batteries of highway safety experts, field tests to collect psychometric, normative, and validation data for the Class C items were conducted with Iowa driver education students, with Coast Guard recruits, and with various driver license applicant and driver improvement groups in Michigan. Similar evaaluations and tests of the Class M pool were completed. An operational manual, "Handbook for Driving Knowledge Testing", which includes the Class C item pool and tutorial test construction material, was prepared. (NTIS)