Abstract
Literature on police enforcement procedures directed at the unsafe driving actions (UDAs) of speeding, following too closely, and driving left of center was reviewed. Speeding was emphasized in the review. The review presents and discusses literature describing police enforcement procedures for these UDAs, identifies legal factors that influence the use of the procedures by police agencies, considers the effects of the procedures on traffic safety and related variables, and identifies knowledge gaps that need to be filled by future research.