Government Documents (VTTI)

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Browsing Government Documents (VTTI) by Subject "Advanced traveler information systems (ATIS)"

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    Case study evaluation of the Virginia Department of Transportation's I-81 ITS program
    Baker, Stephanie Ann (United States. Federal Highway Administration, 2002-03-15)
    The primary goal of this report is to provide information to the Sponsors, Policy Committee, and Management of the I-81 ITS Program that may improve the Program. In order to do this, the report focuses on the development of the Program and the lessons learned. Through lessons learned, recommendations are made about how the Program can be improved. The evaluation covers the period from November 1999 through September 2001. The period of performance for the conduct and writing of the evaluation was September 2001 through March 2002. There are three sections to this report. The first is a background description of the I-81 ITS Program, including a discussion of other ITS projects that may have influenced the Program. The second is an analysis of steps taken to develop the Program, and the third is a list of barriers the Program is facing and recommendations for how to overcome these challenges and improve the Program.
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    Development of Human Factors Guidelines for Advanced Traveler Information Systems and Commercial Vehicle Operations: ATIS Function Transitions
    Campbell, J. L.; Hanowski, Richard J.; Hooey, B. L.; Gore, B. F.; Kantowitz, Barry H. (United States. Federal Highway Administration, 1999-12)
    The objective of the first experiment reported below was to measure the cognitive demands associated with transitioning across Advanced Traveler Information System (ATIS) functions. This required the development of both objective and subjective indices of driver behavior and cognition. To accomplish this, a small number of pre-drive trip scenarios that invoke appropriate transitions across ATIS functions were developed. Driving performance under more representative conditions was investigated in experiment 2 using a driving simulator. This study investigated several issues on the influence of an ATIS on driving behavior. The questions asked were: 1. How does a moving map display of the current vehicle location influence driving performance? 2. How do ATIS control inputs influence driving performance? Should they be allocated to pre-drive? Is it too much to expect the driver to do while in transit? 3. Do ATIS messages affect drivers' reactions to roadway events? 4. Does message potency affect drivers' reactions to roadway events? Overall, the two experiments reported here suggest that in-vehicle ATIS devices can be learned, understood, and successfully used by drivers for both pre-drive trip planning tasks and on-road driving conditions. ATIS devices have the potential to improve driver compliance to regulatory information, as compared with standard roadside signs. While concurrent visual and auditory ATIS alert messages may be beneficial, the visual ATIS messages alone are significantly better than roadside signage alone. While cognitive demands associated with ATIS transitions and ATIS complexity should continue to be a concern, these demands can be addressed by selecting ATIS functions with clear benefits to the driving task.
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    Development of Human Factors Guidelines for Advanced Traveler Information Systems and Commercial Vehicle Operations: Display Channels
    Kantowitz, Barry H.; Hanowski, Richard J.; Garness, Sheila A. (United States. Federal Highway Administration, 1999-12)
    Three experiments were conducted in a driving simulator to evaluate effects of in-vehicle message modality and message format on comprehension and memory for younger and older drivers. Visual icons and text messages were effective in terms of high comprehension and high memory retention over a 50-sec delay period for both older and younger drivers. Auditory icons (earcons) were unsuitable for older drivers, although younger drivers performed well using symbolic and speech in-vehicle messages. For visual only, auditory only, and auditory plus visual messages both textual and symbolic message formats were equally effective. No adverse effects of in-vehicle message presentation were found for lateral and longitudinal vehicle control. Implications of these findings for development of ATIS guidelines were discussed.
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    Development of Human Factors Guidelines for ATIS and CVO Identify Strengths and Weaknesses of Alternative Information Display Formats
    Hulse, Melissa C.; Dingus, Thomas A.; Mollenhauer, Michael A.; Liu, Y. C.; Jahns, Steven K.; Brown, T.; McKinney, B. (United States. Federal Highway Administration, 1993-10)
    This report is one of a series 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 goals of the work covered in this report were to: (1) identify information format alternatives for ATIS devices for both private drivers and CVO applications, and (2) identify research issues that must be addressed in order to develop effective information format guidelines. To achieve these goals, and to make the greatest progress possible toward the ultimate project goal of guideline development, the project developed the strategy of turning the current state of knowledge into tools applicable to any ATIS design. Four primary design-decision tools were developed. These tools are intended to help either professional or nonprofessional human factors designers make appropriate tradeoff decisions in designing effective ATIS displays. The four tools are: (1) Sensory Modality Allocation, (2) Trip Status Allocation, (3) Display Format Allocation, and (4) Display Location.
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    Historical Development of the Travel Shenandoah Pilot Service
    Baker, Stephanie Ann; Hintz, Rewa; Trimble, Tammy E. (United States. Federal Highway Administration, 2002-05)
    The purpose of this report is to document the historical development of the Travel Shenandoah pilot project. This report will not attempt to describe in detail the entire five-year history; rather it will focus on the major events that helped evolve the program into what it is now. The history covers the period from pre-deployment in 1997, through the evolution of the service into 511 Virginia in February 2002. By analyzing past documents, a history has been developed and is presented in chronological format in this report. This history will become the background for a formal evaluation of the new 511 Virginia service, formerly Travel Shenandoah. There are three sections to this report. The first section is a summary of the original pilot Travel Shenandoah Service. The second is a history from 1997 to 2002, including a brief description of the new 511 Virginia service. The final section is a discussion of the evolution of the Travel Shenandoah business model.