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To the Editor:—
In the article by Newman and Fletcher, "The Effect of Alcohol on Driving Skill" (The Journal, Nov. 9, 1940, p. 1600), are certain discrepancies which might not be perceived.The authors give experimental data which apparently justify their attack on the "injustice" of the figure of 0.15 per cent alcohol in the blood, which has been set by committees of both the American Medical Association and the National Safety Council as the point at which 100 per cent of persons "tolerant" or otherwise suffer a definite impairment in their driving ability, to the extent that it comes within the meaning of most state laws concerning drunken driving.They state that the purpose of their experimental work was to investigate the correlation between impairment of driving ability and the 0.15 per cent concentration of alcohol in the blood. Their data of ninety-eight trials on 65 subjects are presented
Davis DF. THE EFFECT OF ALCOHOL ON DRIVING SKILL. JAMA. 1940;115(25):2199–2200. doi:10.1001/jama.1940.02810510074028
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