Minimum Highway Sign Luminance Requirements for Older Drivers


Book Description

In this research, the minimum amount of luminance required by older and younger drivers to identify a numerical legend on yellow warning signs at night was investigated. A field study was conducted for subjective and objective evaluation of seven yellow warning signs on a simulated two-way rural highway. The signs were prepared to have different retroreflectivity values thus providing different luminance values to the subjects.




Transportation in an Aging Society


Book Description










Human Factors in Transportation


Book Description

Human Factors in Transportation Proceedings of the 13th International Conference on Applied Human Factors and Ergonomics (AHFE 2022), July 24–28, 2022, New York, USA




Designing Transportation Systems for Older Adults


Book Description

This book provides comprehensive information needed to assist with all aspects of designing, delivering, or evaluating transportation systems for use by older adults, and presents the necessary background on aging and human factors issues as well as practical guidelines needed to accommodate older adult transport users. Features Presents clear design guidance aimed at improving usability among older adults, a too often neglected but fast-growing segment of the transportation system population Includes comprehensive coverage of transportation systems, including the notably important issue of older drivers, but also additional transportation forms including public transportation via bus and subway, air transport, rail, bicycle, and even pedestrians Offers numerous examples throughout of best practices based on both the scientific literature and the content expertise of the authors Discusses practical implications of incorporating the recommended design principles for both older adults and other transport system users Provides useful background about normal age-related changes in sensory, cognitive, and physical abilities that impact older adults and how they interact with transportation systems







Assessment of Traffic Control Practices with Respect to Older Drivers


Book Description

When signage on a rural highway in Kansas was upgraded, the State received some comments that begged the question of whether modern highly reflective sign sheeting materials could, in some circumstances, actually decrease the legibility of signage, particularly for older drivers. Older drivers tend to have poorer visual acuity, requiring larger signs to provide the same legibility as found in a younger population. However, older drivers also tend to be more sensitive to glare and slower to recover from glare blindness. This study was conducted to determine if highly reflective sheeting could cause a reduction in sign legibility due to veiling glare, especially in older drivers. The test was conducted using 60 drivers in an actual automobile and full scale signs and distances. The data collection was conducted in a test facility where external factors could be eliminated, isolating the variables of greatest interest. Older drivers as a whole were found to exhibit poorer performance in terms of visual acuity and response time, but no detrimental effects attributable to glare were observed.