Any amount of alcohol will affect driving ability. Alcohol´s effect is magnified by emotions, physical condition, use of prescription drugs or other types of drugs, some over-the-counter medications and some herbal supplements. BAC AND AREAS OF IMPAREMENT   .08 concentrated attention, speed control   .07     .06   ____________________________   information processing, judgment .05     ____________________________   .04 coordination ____________________________   eye movement control, standing steadiness, emergency responses .03   ____________________________ .02 tracking and steering ____________________________ .01 divided attention, choice reaction time, visual function     BAC   Blood Alcohol Concentration Source: Connecticut Department of Motor Vehicles