Cal. Code Regs. tit. 4, § 1689.1
(a) No jockey or apprentice jockey shall ride in a race unless wearing a safety vest, nor shall a jockey, apprentice jockey, or exercise rider, train or exercise any horse on the grounds of a racing association, racing fair, or authorized training facility unless wearing a safety vest.
(c) Safety vests required to be worn in accordance with this regulation shall:
(1) Provide a minimum of shock absorbing protection to the upper body, as evidenced by a label indicating that the safety vest meets one of the following standards:
(4) No vest shall be altered from its original manufactured design. This includes, but is not limited to:
Note: Authority cited: Sections 19420, 19481 and 19562, Business and Professions Code. Reference: Section 19481, Business and Professions Code.
1. New section filed 10-26-93; operative 1-1-94 (Register 93, No. 44).
2. Change without regulatory effect amending subsections (a) and (b), repealer of subsections (c) and (d) and amendment of Note filed 12-23-96 pursuant to section 100, title 1, California Code of Regulations (Register 96, No. 52).
3. Amendment of subsections (a) and (a)(3) and amendment of Note filed 2-15-2001; operative 2-15-2001 pursuant to Government Code section 11343.4 (Register 2001, No. 7).
4. Amendment filed 6-9-2010; operative 7-9-2010 (Register 2010, No. 24).
5. New subsection (a)(1) filed 7-5-2016; operative 10-1-2016 (Register 2016, No. 28).
6. Amendment of subsection (b) filed 2-21-2018; operative 4-1-2018 (Register 2018, No. 8).