<P> All others are "moist" counties, which are a combination of wet and dry areas . </P> <P> People must be at least 21 years of age to legally consume alcoholic beverages in Texas with certain exceptions, as in any other state in the United States . However, employment or service which requires vending or handling alcoholic beverages can be entered into at age 18 . </P> <P> All previously opened containers of alcoholic beverages must be stored and transported in a vehicle's trunk or other storage to which the driver and or any passengers do not have access . </P> <P> An operator of a motor vehicle is considered under the influence of alcohol if a chemical screening test shows a blood - alcohol content of 0.08 percent or higher . No other evidence (such as Field Sobriety tests) need be presented to the court to obtain a DUI (driving under the influence) conviction . A driver testing 0.15 percent or more over the legal limit of 0.08 percent faces more severe penalties for enhanced BAC . When under the age of 21, a driver in Texas must not test positive for any blood - alcohol content (BAC) and may be charged with DUI even if the amount tested is under 0.08 percent . </P>

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