Sweden has the lowest BAC limit in the world, 0.02.

"Alcohol metabolism, " ALCOHOL ALERT (1997), 35 PH 371. (Explains how alcohol is metabolized by the body and factors affecting this metabolism such as food, gender, medications, body weight, and so on.) Address:

Blomberg, R. D.; "Lower BAC limits for youth: Evaluation of the Maryland .02 Law. Washington, D. C.", National Highway Traffic Safety Administration, 1992, 125 p. The purpose of this study was to determine the effects of special drinking driving sanctions aimed at youthful drivers under the age of 21 years. This purpose was accomplished by focusing on a Maryland law which restricts driving by those under 21 to a blood alcohol concentration (BAC) less than 0.02 percent. Objectives were: 1) evaluate the impact of adoption of the sanction; 2) mount a public information and education campaign in selected counties to attempt to potentate the effects of the sanction; and 3) evaluate any added benefit of the information campaign. Crash data were used statewide and in six experimental counties. The unit of analysis was accident involved drivers under 21 years of age judged " had been drinking" on the police accident report. Box-Jenkins time series analysis of this measure indicated a significant step reduction in crash-involved drivers under 21 judged had been drinking coincident with adoption of the sanction and an additional significant step reduction in the experimental counties after application of the information campaign. Data in the experimental and comparison counties confirmed that knowledge of the sanction among youth increased significantly after exposure to the information campaign at the experimental sites but not at the comparisons. It was concluded that this special sanction for youth was effective and this effectiveness was significant and made more effective by a public service information program which emphasized the possible penalties for violation of the regulation.

Hingson, R.; Heeren,T.; Morelock, S.; "Effects of Maine's 1982 .02 law to reduce teenage driving after drinking. ALCOHOL DRUGS AND DRIVING, 5 (1):25-36, 1989. The effectiveness of Maine's 1982 .02 law, under which the state implemented an automatic one year driver's license suspension for any person under age 20 stopped for driving with a blood alcohol concentration (BAC) over .02 percent. In a follow-up telephone survey, 500 16-to 19-year-olds were interviewed in July 1983 and 1000 16-to 19- year-olds were interviewed annually for three post-law years and asked the same questions as a monitor of post-law attitudes and behavior. In the first and second years post-law, 1400 and 1200 Maine teenage licenses were suspended, respectively. It is noted that awareness of the law and its effects was very low among Maine teenagers. However, during the first three post-law years, the annual average of fatal night accidents in which teenagers were involved dropped 20 percent relative to the four pre-law years, while similar adult accidents rose by 2 percent. Other risky driving behaviors of adolescents may prevent further significant declines in fatal crash numbers.

Hingson, R.; Heeren,T.; Morelock, S.; Lederman, R.; "Effects of Maine's .02 law," International Symposium on Young Drivers' Alcohol- and Drug- Impairment: Selective Countermeasure Programme Development. Abstracts, Amsterdam, The Netherlands: 13 Sep - 15 Sep, 1986 41 p. ( pp. 18). In June 1983, Maine introduced a law suspending a driver's license for one year of any teenager who drove with a blood alcohol level of .02 or higher, a level reachable after one drink. Statewide anonymous random telephone surveys of 500 16 to 19 year olds in Maine and in Massachusetts queried respondents about the year prior to the law. Surveys were(N=1000) conducted with adults 20 years old and older in each state. Teenage and adult surveys (N=1000) were repeated twice per year following the law in each state. The proportion of Maine teenagers who understood it is illegal to drive after a drink or more increased significantly, but even two years after the law, over 40 percent of Maine teenagers believed they could drive legally after two or more drinks. Two-thirds did not realize their licenses could be suspended for one year if they drove after drinking. Reported frequency of driving after drinking, heavy drinking, and nonfatal crash involvement declined significantly among Maine 16 to 19 year olds relative to Massachusetts teens and Maine adults. Declines were greatest among teens aware of the law. The proportion of injury and fatal crashes that involved adults 20 years of age and older increased significantly in Maine after the law relative to Maine 16 to 19 year olds.

updated 12/12/16