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Publication Number: FHWA-RD-95-181
Date: July 1996
Design of an ITS-Level Advanced Traffic Management System: A Human Factors Perspective
This report documents a top–down system analysis conducted during the course of an investigation of human factors issues critical to the design of an advanced traffic management system (ATMS). Methodologies employed in conducting this analysis, procedures for implementing such methodologies, and analysis results are presented. System objectives and performance requirements for an ideal ATMS, as well as the functionality for such a system, are defined. (The ideal system represents a hypothetical ATMS, one that is unconstrained by real–world events, existing practices in traffic engineering, or current technologies.) Ultimately, real–world elements were considered, where idealized objectives, performance requirements, and functional definition were revised. These revisions are documented here.
Issues associated with the human operator (assignment of operator roles to each ATMS function, specification of operator performance requirements, and identification of operator tasks) are also addressed. Results of the ATMS function allocation process are presented. Included in this presentation is an introduction to the theoretical framework guiding ATMS function allocation: operator role theory, In this report, assessment of the human operator begins at a global level and progresses through increasingly detailed levels. This assessment terminates with the results of a detailed task analysis. Task analysis results supported the preparation of a human factors specification for traffic management center (TMC) configuration items.
George Ostensen, Director Office of Safety and Traffic Operations Research and Development
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TECHNICAL REPORT DOCUMENTATION PAGE
Form DOT F 1700.7 (8–72) Reproduction of completed page authorized
Keywords: Hazard perception, driver performance variability, safety, research program, human factors