Center for Drug and Alcohol Research, Federal University of Rio Grande do Sul, Porto Alegre, Brazil.
Int J Drug Policy. 2012 Mar;23(2):166-8. doi: 10.1016/j.drugpo.2011.10.002. Epub 2011 Nov 16.
In Brazil the legal blood alcohol content (BAC) allowed for driving was changed to zero in 2008. If the BAC found is above 0.6g/L, drivers may be arrested. However, there are limited data on drivers' awareness of such limits.
Drivers from 27 major metropolitan areas (n=3397) were randomly asked to participate in roadside survey from 12 a.m. to 12 p.m. on Fridays and Saturdays. They were breathalized by highway patrol officers, and after consent interviewers collected data on drinking behaviours, knowledge about the law, and breath tests results.
The mean age was 37.3±11.3 years; 94.3% were male and 26.5% had some college education. When asked about the BAC that could result in arrest, 34.5% of the subjects claimed to know it. However, only 23.5% (8.1% of the total sample) provided correct answers. Factors associated with the right answers were: male gender (p=0.04; OR=2.08; CI=1.01-4.27); higher education (p<0.0001); negative BAC or self-report of driving under the influence (DUI) (p=0.02); higher family income (p=0.01) and non-professional driving (p=0.041). Age was not statistically different between groups. After multivariate analysis, male gender (p=0.002), higher education (p<0.0001) and negative BAC or DUI (p=0.046) remained in the model.
The knowledge that BAC levels over 0.6g/L may result in arrest is sparse amongst Brazilian drivers, notably amongst women, the less educated and those who drink and drive. Educational programmes targeted at those specific groups may be necessary in order to increase awareness about the legal BAC limit and its consequences.
巴西于 2008 年将可合法驾驶车辆的血液酒精含量（BAC）上限降至零。如果 BAC 检测结果超过 0.6g/L，驾驶员可能会被逮捕。然而，关于驾驶员对这些限制的了解程度的数据有限。
从 27 个主要大都市区（n=3397）中随机抽取驾驶员，在周五和周六的 12 点至 12 点接受路边调查。他们由高速公路巡逻官员进行呼气测试，同意后，采访人员收集有关饮酒行为、法律知识和呼气测试结果的数据。
参与者的平均年龄为 37.3±11.3 岁；94.3%为男性，26.5%接受过一些大学教育。当被问及可能导致逮捕的 BAC 时，34.5%的参与者声称了解。然而，只有 23.5%（总样本的 8.1%）提供了正确答案。与正确答案相关的因素包括：男性（p=0.04；OR=2.08；CI=1.01-4.27）；较高的教育程度（p<0.0001）；BAC 为阴性或自述酒后驾车（DUI）（p=0.02）；较高的家庭收入（p=0.01）和非职业驾驶（p=0.041）。组间年龄无统计学差异。多元分析后，男性（p=0.002）、较高的教育程度（p<0.0001）和 BAC 为阴性或 DUI（p=0.046）仍然存在于模型中。
巴西驾驶员对 BAC 水平超过 0.6g/L 可能导致逮捕的认识不足，尤其是女性、受教育程度较低者以及酒后驾车者。针对这些特定群体的教育计划可能是必要的，以提高对法定 BAC 限制及其后果的认识。
