37 Tex. Admin. Code § 343.818
For resident, staff, and public safety purposes, a resident may be placed in ankle cuffs, handcuffs, wristlets, or a waist belt absent the imminent threat requirements in §343.802(d) of this title. These types of preventive mechanical restraints are authorized under the following circumstances:
(2) Mechanical restraints may be used when transporting a resident in a vehicle. However, a resident shall not be secured to:
(4) The routine, preventive use of mechanical restraint applications described in this section is exempt from the documentation requirements contained in §343.806 of this title, except when:
Source Note:The provisions of this §343.818 adopted to be effective January 1, 2010, 34 TexReg 7095; amended to be effective January 1, 2015, 39 TexReg 9243.