Development of Human Factors Guidelines for Advanced Traveler Information Systems and Commercial Vehicle Operations: The Effects of Inaccurate Traffic Information on Driver Behavior and Acceptance of an Advanced In-Vehicle Traveler Information System
This report is one of a series reports produced as part of a contract designed to develop precise, detailed human factors design guidelines for Advanced Traveler Information Systems (ATIS) and Commercial Vehicle Operations (CVO). The contractual effort consists of three phases: analytic, empirical, and integration. This report is a product of the empirical phase. The empirical phase will also address topics such as: ATIS function transition, display channels, multi–modality displays, CVO driver fatigue, display formats and workload, and head–up displays. Among the analytic topics discussed in the series are functional description of ATIS/CVO, comparable systems analysis, task analysis of ATIS/CVO functions, alternate systems analysis, identification and exploration of driver acceptance, and definition and prioritization of research studies.
This study is part of the empirical phase of this ATIS/CVO guidelines development effort and is one of a series of investigations designed to provide supporting rationale for the in–vehicle design guidelines. The research reported in this document investigated the effects of varying information accuracy regarding traffic conditions, in both familiar and unfamiliar traffic networks, on driver performance, use and acceptance of in–vehicle information systems.
Copies of this report can be obtained through the Research and Technology Report Center, 9701 Philadelphia Court, Unit Q, Lanham, Maryland 20706, telephone: (301) 577–0818, fax: (301) 577–1421, or the National Technical Information Service (NTIS), 5285 Port Royal Road, Springfield, Virginia 22161, telephone: (703) 487–4650, fax: (703) 321–8547.
A. George Ostensen, Director
Office of Safety and Traffic
Operations Research and Development
This document is disseminated under the sponsorship of the Department of Transportation in the interest of information exchange. The United States Government assumes no liability for its content or use thereof. This report does not constitute a standard, specification, or regulation.
The United States Government does not endorse products or manufacturers. Trade and manufacturers' names appear in this report only because they are considered essential to the object of the document.
TECHNICAL REPORT DOCUMENTATION PAGE
|1. Report No.
|2. Government Accession No.
||3. Recipient's Catalog No.
|4. Title and Subtitle
DEVELOPMENT OF HUMAN FACTORS GUIDELINES FOR ADVANCED TRAVELER INFORMATION SYSTEMS (ATIS) AND COMMERCIAL VEHICLE OPERATIONS (CVO): THE EFFECTS OF INACCURATE
TRAFFIC INFORMATION ON DRIVER BEHAVIOR AND ACCEPTANCE OF AN ADVANCED IN-VEHICLE TRAVELER INFORMATION SYSTEM
|5. Report Date
B.H. Kantowitz, R.J. Hanowski, & S.C. Kantowitz
|8. Performing Organization Report No.
|9. Performing Organization Name and Address
Battelle Human Factors Transportation Center
4000 41st Street NE
Seattle, Washington 98105
|10. Work Unit No. (TRAIS)
|11. Contract or Grant No.
|12. Sponsoring Agency Name and Address
Office of Safety and Traffic Operations R&D
Federal Highway Administration
6300 Georgetown Pike
McLean, VA 22101–2296
|13. Type of Report and Period Covered
February 1995 – November 1996
|14. Sponsoring Agency Code
|15. Supplementary Notes
Contracting Officer's Technical Representative (COTR): Joe Moyer, HSR–30, Thomas Granda, SAIC
The document type of resource materials.
How reliable must traffic information be for motorists to trust and accept such advice? This study provides data to aid the designer of Advanced Traveler
Information Systems (ATIS) in selecting an appropriate level of system accuracy. The Battelle Route Guidance Simulator was used to study: (1) the effects
of information accuracy, and (2) familiarity of the driving environment on objective and subjective indices of driver performance and opinion. The
simulator provided real-time information and traffic video. Information was either 100 percent, 71 percent, or 43 percent accurate. Drivers experienced
either Seattle and its environs or an artificial setting that was topologically matched to Seattle. Results showed that while 100 percent accurate
information yielded best driver performance and subjective opinion, information that was 71 percent accurate was still accepted and used. But information
that was 43 percent accurate produced powerful decrements in performance and opinion. Simulated ATIS information was not used as effectively in the
familiar Seattle setting. Driver trust decreased with inaccurate information but recovered, although not always fully, with subsequent accurate
|17. Key Words
ATIS, ITS, Traffic Information, Trust
|18. Distribution Statement
No restrictions. This document is available to the public through the National Technical Information Service, Springfield, Virginia, 22161.
|19. Security Classif. (of this report)
|20. Security Classif. (of this page)
|21. No. of Pages
|Form DOT F 1700.7 (8-72)
||Reproduction of completed page authorized
TABLE OF CONTENTS
LIST OF FIGURES
1. Battelle Route Guidance Simulator
2. Topography of familiar network
3. Topography of unfamiliar network
4. Mean penalty costs as a function of Accuracy
5. Mean rated interlink trust as a function of Information Accuracy and Link Position
6. Mean rated trust in the RGS as a function of Accuracy-Group, Network Familiarity, and Traffic Information Accuracy
7. Mean Rated trust minus self-confidence as a function of Accuracy-Group and Link Position
8. Trust minus self-confidence as a function of Accuracy-Group, Network Familiarity, and Traffic Information Accuracy
9. Mean rated traffic expectations as a function of Accuracy-Group and Traffic Information Accuracy
LIST OF TABLES
1. Distribution of inaccurate link information for Trials 3 and 48
LIST OF ABBREVIATIONS
ATIS Advanced Traveler Information Systems
ITS Intelligent Transportation Systems
RGS Route Guidance Simulator
T-SC Trust Minus Self-Confidence