Citation

Fisher AJ, Hall RR. Aust. J. Optom. 1982; 65(5): 194-195.

Copyright

(Copyright © 1982, Australian Optometrical Association, Publisher John Wiley and Sons)

DOI

10.1111/j.1444-0938.1982.tb03685.x

PMID

unavailable

Abstract

The vast majority of information used in driving is still of a visual nature. Road lighting is well established on urban traffic routes, giving substantial reductions in night casualty accidents. On other roads retroreflection from vehicular headlights is a major visual aid. Retroreflectors can be of a high quality and act as alerting devices. However, problems remain in getting pedestrians to use them. The patterns of reflectors should be optimised to provide additional information about various situations, road bends for example, and different users such as cyclists. Optometrists should be aware of how the scene at night differs from that viewed by day. The lighted field of view is restricted in size and is of low brightness. Detection of individual point sources of often high colour saturation is required with subsequent recognition of patterns of sources, and high levels of glare can be encountered.

Language: en