Samenvatting
Simulated braking response have been tested in relation to blood carbony-hemoglobin levels. In women the brake response time deteriorated from age 16 year, but in the men there was an improvement from age 16 to the early 20's. Times at all ages were better for men then for women. Average response times and the rate of aging of the braking response were very similar in smokers and in nonsmokers.