Are there different DWI laws for minors?

Yes. Although minors between the ages of 18 and 20 may be charged and prosecuted under the adult DWI laws, the laws for minors differ significantly than those for adults. There, the issue is not whether a minor drove while intoxicated, but rather, a minor need only to have driven while under the influence of alcohol to be convicted (DUI). The law states that a minor commits an offense if he operates a motor vehicle in a public place while having any detectable amount of alcohol in the minor's system. Furthermore, although Texas law prohibits the prosecution and conviction of juveniles for many offenses, the legislature has made special exceptions to prosecute juveniles who drink alcohol and drive.