Title page for ETD etd-05032001-092804

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
  • IVIS
  • In-vehicle infromation systems
  • ITS
  • attention demand
  • situation awareness
Date of Defense 2001-04-25
Availability unrestricted
An Assessment of the Attention Demand Associated with the Processing of

Information for In-Vehicle Information Systems (IVIS)

John Paul Gallagher


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.

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  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
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  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
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  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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