<Li> damages someone else's property, or </Li> <Li> leaves and is involved in a motor vehicle accident and causes injury to themselves or others . </Li> <P> An operator of a motor vehicle is considered automatically under the influence of alcohol if a chemical screening shows a blood - alcohol content (BAC) of 0.08 percent or greater . If under the age of 21, a driver in Texas is not able to test positive for any blood - alcohol content (BAC) under penalty of DUI charges . </P> <P> Several counties are completely "dry" counties, where no sales of alcoholic beverages are legal anywhere in the county: </P>

What's the legal drinking limit in texas