The purpose of the project, "Revision and Update of Traffic Safety Manpower Training Program Development Guide," was to develop the HIGHWAY TRAFFIC SAFETY MANPOWER FUNCTIONS GUIDE. This document provides an organizational schema illustrating the functions essential to be performed and the interrelationship of these functions to carry out highway traffic safety programs. The purpose of this publication is to assist administrators, managers, and educators through a new approach for describing and classifying manpower functions being performed to enhance highway traffic safety programs. The classification is based upon eleven functional areas consisting of a cluster of 45 functions aimed at achieving a common goal in highway traffic safety. Each function consists of a group of specific actions performed by one or more individuals to achieve five highway safety objectives. Descriptions were derived from selected case studies for each function with support information from the literature and NHTSA program specialists. A bibliography classified by functional areas is reported. (Author)