Typically, an officer will pull you over, ask you a few questions about what you've had to drink, and potentially administer a series of field sobriety tests. It's important to know that a DWI arrest does not automatically mean you are guilty, and it doesn't mean you will be convicted.Have you been charged with or arrested for a DWI? Contact Houston DWI defense attorney Ned Barnett today at (713) 222-6767 to find out how we can help you. (a) A person commits an offense if the person appears in a public place while intoxicated to the degree that the person may endanger the person or another. A firstoffense DWI doesn't have to ruin your life. Here's what you need to know about fighting a DWI. Texas assigns DWI penalties for drivers 21 years old or older according to the offense number and other situation-specific factors. This guide provides a comprehensive overview of what to expect, the legal procedures involved, and how to navigate through each stage. In Texas, a first offense DWI can be charged as either a class A or Class B misdemeanor.