The structure of this paper follows the hypotheses listed above. Chapter
1 explains the experiment proposal and design, subject recruitment and training,
and ends with preliminary data on the subjects. Chapter 2 sets the stage
and includes a literature review. Chapter 3 examines specific tasks and
locations that restrict travel for those with vision impairments and reports data
on the performance of the subjects in the test environment. Chapter 4 examines
how these tasks and locations have a negative affect on trip making and activity
choice and how access is limited by these problems. Chapter 5 details how
overall quality of life is reduced by vision loss and how spatial information
from auditory cues can help this population lead a more satisfying life.
Chapter 6 summarizes the various benefits attributed to increased access to information
and the transit and urban environment. Monetary benefits and “willingness
to pay” data are then examined. Chapter 7 discusses the overall implications
of the study in terms of making environments more accessible for people with vision
disabilities. Also discussed are the contributions made by this study to
spatial and geographic theory related to human navigation, an evaluation of the
experimental design and methodology used in the study, and suggestions for future
research that may arise as RIAS technology is enhanced in the future.