When people call my office after a DWI arrest they ask the question posted above. The answer is straighforward. Typically, the only reason a person would be required to apply for a SR22 arising out of a DWI or drunk driving arrest in Houston,Texas would be because they are seeking an occupational license. However, a SR22 is not requried in a lot of the cases we handle because a first DWI conviction would not cause a license suspension if jail time is avoided. Furthermore, if we save a person's license at the ALR hearing, where DPS is attempting to suspend your driver's license for providing a breath/blood alcohol sample above .08 or refusing to provide a sample altogether, an occupational license wil not be necessary. Therefore in most instances a SR22 is not necessary after a DWI arrest in Houston.