The principal tasks performed by conductors, rear brakemen, and head brakemen during over-the-road freight operations are identified and described in the report. Forty-four tasks and subtasks are analyzed and grouped into six categories: basic handling tasks, prerun preparation and starting off tasks, over-the-road tasks, terminating tasks, operating emergency and malfunction tasks, and auxiliary equipment operating tasks. Task and subtask descriptions describe initiating stimuli, information processing and decision making, response made by the operator, and the feedback received. Task analysis includes task difficulty, potential hazards, and the criticality of each task. Operational sequence diagrams for each task, with additional information given concerning the decisions depicted, are provided. Evaluation measures can be ascertained from task data, training requirements, selection criteria, and performance. Illustrations of common train documents filled out by the conductor and an annotated bibliography of 43 titles dealing with job analysis are appended. Recommendations are made in the area of improving the safety of train operations. (Author/LH)