Crossing roads safely: an experimental study of age differences in gap selection by pedestrians.

The over-representation of older pedestrians in serious injury and fatal crashes compared to younger adults may be due, in part, to age-related diminished ability to select gaps in oncoming traffic for safe road-crossing. Two experiments are described that examine age differences in gap selection decisions in a simulated road-crossing environment. Three groups of participants were tested, younger (30-45 years), young-old (60-69 years) and old-old (>75 years). The results showed that, for all age groups, gap selection was primarily based on vehicle distance and less so on time-of-arrival. Despite the apparent ability to process the distance and speed of oncoming traffic when given enough time to do so, many of the old-old adults appeared to select insufficiently large gaps. These results are discussed in terms of age-related physical, perceptual and cognitive limitations and the ability to compensate for these limitations. Practical implications for road safety countermeasures are also highlighted, particularly the provision of safe road environments and development of behavioural and training packages.

[1]  D Silcock,et al.  RISK AND SAFETY ON THE ROADS: THE OLDER PEDESTRIAN , 1995 .

[2]  J. E. Korteling,et al.  Effects of Aging, Skill Modification, and Demand Alternation on Multiple- Task Performance , 1994, Human factors.

[3]  H. Leibowitz,et al.  Age differences in estimating vehicle velocity. , 1991, Psychology and aging.

[4]  J Oxley,et al.  Age-related functional impairments and the impact on the ability to cross roads safely , 2001 .

[5]  Patricia R. DeLucia,et al.  Judgments about collision in younger and older drivers , 2003 .

[6]  Timothy A. Salthouse,et al.  Theoretical Perspectives on Cognitive Aging , 1991 .

[7]  Karlene K. Ball,et al.  Speed-of-Processing and Driving Simulator Training Result in Improved Driving Performance , 2003, Hum. Factors.

[8]  B Fildes,et al.  Differences in traffic judgements between young and old adult pedestrians. , 1997, Accident; analysis and prevention.

[9]  John F. Corso,et al.  Aging Sensory Systems and Perception , 1981 .

[10]  R Sekuler,et al.  Self-Reported Visual Problems of Older Drivers , 1990, Human factors.

[11]  V Cavallo,et al.  Visual Information and Skill Level in Time-To-Collision Estimation , 1988, Perception.

[12]  F. Craik,et al.  The handbook of aging and cognition , 1992 .

[13]  A J Yanik,et al.  AT FAULT ACCIDENT PATTERNS OF OLDER DRIVERS , 1991 .

[14]  David N. Lee,et al.  A roadside simulation of road crossing for children , 1984 .

[15]  Raymond J. Shaw,et al.  Attention and Aging: A Functional Perspective , 2000 .

[16]  B. Fildes,et al.  Simulation of the road crossing task for older and younger adult pedestrians: a validation study , 1997 .

[17]  R B Isler,et al.  Child pedestrians' crossing gap thresholds. , 1998, Accident; analysis and prevention.

[18]  Patrick Rabbitt,et al.  People's awareness of their age-related sensory and cognitive deficits and the implications for road safety , 1992 .

[19]  Gabriel Helmers,et al.  Trafikmiljö för äldre bilförare : analys och rekommendationer utifrån en litteraturstudie , 2004 .

[20]  Lucy Johnston,et al.  An investigation of road crossing in a virtual environment. , 2003, Accident; analysis and prevention.

[21]  William Schiff,et al.  Aging persons' estimates of vehicular motion. , 1992 .

[22]  F J Mathey.  Attitudes and Behavior of Elderly Pedestrians , 1983, International journal of aging & human development.

[23]  Pierre Joly,et al.  Executive Functions in the Evaluation of Accident Risk of Older Drivers , 2002, Journal of clinical and experimental neuropsychology.