(A) a guard company described by Section 1702.108, Occupations Code; or (B) a security officer as defined by Section 1702.002, Occupations Code. (3) "Tow truck" means a motor vehicle or mechanical device that is adapted or used to tow, winch, or move a disabled vehicle. Acts 1995, 74th Leg., ch. 165, Sec. 1, eff. Sept. 1, 1995. There are 10 standardized restriction codes. ... Visit dmv.ca.gov or call 1-800-777-0133 to make an appointment. Use of Testing Aids Are Prohibited. The use of testing aids is strictly prohibited during the knowledge test. ... and counties may post signs on highways which they control, to permit wider vehicles, or prohibit vehicles wider than.