DEFECTIVE VISION
A ROAD MENACE. Many goggles tone down the colour values upon the road and make it most difficult to distinguish the kerb. Some eyes do not respond rapidly to changes in strength of illumination and pennit so much light to enter through the iris diaphragm that the driver is easily light-blinded. Other people have "optical fittings,’’ which do not readily focus, so that when they look at the flies on the windscreen it takes them an appreciable time to re-focus upon distant objects in the proper line of driving sight. Such details as these must seem unimportant, but they can well account for a variation of fifths of a second in perception, nnd it is of such fifths that crashes are part. One logical result of these comments would be for some maker or acessories to produce a wing indicator of which the top is variegated in colour. It would be another demonstration of the fact that a driving position which needs any such and is inherently wrong.
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https://paperspast.natlib.govt.nz/newspapers/HBTRIB19301025.2.104
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Hawke's Bay Tribune, Volume XX, Issue 264, 25 October 1930, Page 13
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170DEFECTIVE VISION Hawke's Bay Tribune, Volume XX, Issue 264, 25 October 1930, Page 13
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