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Journal Article

Citation

Draeger J, Harsch V. Ophthalmologe 2008; 105(4): 362-368.

Vernacular Title

Zur Geschichte der optischen Signalgebung im Verkehrswesen.

Affiliation

Universitats-Augenklinik, Martinistrabe 52, 20095, Hamburg, Deutschland, (k.sebestyen@uke.uni-hamburg.de)

Copyright

(Copyright © 2008, Holtzbrinck Springer Nature Publishing Group)

DOI

10.1007/s00347-008-1733-z

PMID

18350299

Abstract

For signal transmission in traffic today, different optical, acoustic, or other physical or technical means are used for information. The different kinds of traffic (water navigation, road and rail, and, later air transport) made traffic regulation necessary early on. This regulation, from its very beginning in ancient times, began by means of optical signals; nowadays, this remains the most important method. From the very start, minimum requirements for the navigator's vision, color discrimination, dark adaptation, and even visual field were needed. For historical reasons, it was in seafaring medicine that these first developed. Besides the development of the different signals, methods for checking the requirements were soon developed. National and international requirements have been very different. Only within the last 50 years has international cooperation led to the acceptance of general standards for the different traffic modes.This article discusses the technical development of optical signals for the different kinds of traffic, from ancient times to the present, and explains the development of minimum requirements for the different visual functions.

Language: de

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