Texas Transportation Code - TRANSP § 543.005. Promise to Appear;  Release

To secure release, the person arrested must make a written promise to appear in court by signing the written notice prepared by the arresting officer.  The signature may be obtained on a duplicate form or on an electronic device capable of creating a copy of the signed notice.  The arresting officer shall retain the paper or electronic original of the notice and deliver the copy of the notice to the person arrested.  The officer shall then promptly release the person from custody.