Texas Transportation Code - TRANSP § 521.343. Period of Suspension;  Extension

(a) Except as provided by Sections 521.342(b), 521.344(a), (b), (d), (e), (f), (g), (h), and (i), 521.345, 521.346, 521.3465, and 521.351, a suspension under this subchapter is for one year.

(b) If a license is suspended under this subchapter for a subsequent period, the subsequent suspension is for 18 months except as otherwise provided by a section listed in Subsection (a).

(c) If the license holder is convicted of operating a motor vehicle while the license to operate a motor vehicle is cancelled, disqualified, suspended, revoked, or denied, the period is extended for the same term as the original suspension or disqualification, in addition to any penalty assessed under this chapter or Chapter 522.