Type of Document	Dissertation
Author	Gallagher, John Paul
URN	etd-05032001-092804
Title	An Assessment of the Attention Demand Associated with the Processing of Information for In-Vehicle Information Systems (IVIS)
Degree	PhD
Department	Industrial and Systems Engineering
Advisory Committee	Advisor Name Title Dingus, Thomas A. Committee Chair Barfield, Woodrow S. Committee Member Kurstedt, Harold A. Jr. Committee Member Neale, Vicki L. Committee Member Wierwille, Walter W. Committee Member
Keywords	IVIS In-vehicle infromation systems ITS attention demand situation awareness
Date of Defense	2001-04-25
Availability	unrestricted
Abstract An Assessment of the Attention Demand Associated with the Processing of Information for In-Vehicle Information Systems (IVIS) John Paul Gallagher (ABSTRACT) Technological interventions are being considered to alleviate congestion and to improve the quality of driving on our nation’s highways. These new technology interventions will be capable of increasing the amount of information provided to the driver; therefore, steps must be taken to ensure they do not require a high attention demand. (Limited attention resources can be diverted from the primary task of driving to a secondary in-vehicle task). The attention demand required as part of the process of extracting information has been studied relatively extensively. However, the processing required to make complex decisions is not well understood and provides cause for concern. This study investigated the attention demand required to perform several types of tasks, such as selecting a route, selecting the cheapest route, and selecting the fastest route. The three objectives of this study were: 1) To investigate driver performance during IVIS tasks that required additional processing of information after the extraction of information from a visual display. 2) To develop a method for evaluating driver performance with regard to safety. This task was accomplished by performing an extensive review of the literature, and developing two composite measures. 3) To provide descriptive data on the proportion of drivers who exceeded a threshold of driver performance for each of the different IVIS tasks. An instrumented vehicle, equipped with cameras and sensors, was used to investigate on-road driver behavior on a four-lane divided road with good visibility. A confederate vehicle was driven in front of the instrumented vehicle to create a vehicle following situation. Thirty-six drivers participated in this study. Age, presentation format, information density, and type of task were the independent variables used in this study. Results from this study indicate that a high proportion of drivers’ will have substantially degraded performance performing IVIS tasks such as selecting a route or a hotel from several possibilities. Findings also indicate that tasks involving computations, such as selecting the quickest or cheapest route, require a high attention demand and consequently should not be performed by a driver when the vehicle is in motion. In addition, text-based messages in paragraph format should not be presented to the driver while the vehicle is in motion. The graphic icon format should be utilized for route planning tasks.
Files	Filename       Size       Approximate Download Time (Hours:Minutes:Seconds)     28.8 Modem   56K Modem   ISDN (64 Kb)   ISDN (128 Kb)   Higher-speed Access    AppendixA-L.pdf 1.35 Mb 00:06:15 00:03:13 00:02:49 00:01:24 00:00:07   AppendixM.pdf 56.20 Kb 00:00:15 00:00:08 00:00:07 00:00:03 < 00:00:01   AppendixN.pdf 55.16 Kb 00:00:15 00:00:07 00:00:06 00:00:03 < 00:00:01   AppendixO.pdf 35.10 Kb 00:00:09 00:00:05 00:00:04 00:00:02 < 00:00:01   AppendixP.pdf 51.21 Kb 00:00:14 00:00:07 00:00:06 00:00:03 < 00:00:01   AppendixQ.pdf 47.01 Kb 00:00:13 00:00:06 00:00:05 00:00:02 < 00:00:01   AppendixR.pdf 36.98 Kb 00:00:10 00:00:05 00:00:04 00:00:02 < 00:00:01   AppendixS.pdf 30.37 Kb 00:00:08 00:00:04 00:00:03 00:00:01 < 00:00:01   AppendixT.pdf 25.82 Kb 00:00:07 00:00:03 00:00:03 00:00:01 < 00:00:01   AppendixU.pdf 36.68 Kb 00:00:10 00:00:05 00:00:04 00:00:02 < 00:00:01   AppendixV.pdf 38.39 Kb 00:00:10 00:00:05 00:00:04 00:00:02 < 00:00:01   AppendixW.pdf 25.73 Kb 00:00:07 00:00:03 00:00:03 00:00:01 < 00:00:01   AppendixX.pdf 54.73 Kb 00:00:15 00:00:07 00:00:06 00:00:03 < 00:00:01   Dissertation.pdf 776.03 Kb 00:03:35 00:01:50 00:01:37 00:00:48 00:00:04   VITA.pdf 10.21 Kb 00:00:02 00:00:01 00:00:01 < 00:00:01 < 00:00:01

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