Pending Rules/Regulations

• CHRB Rule 1481, Occupational Licenses and Fees; Rule 1483, Application for License; Rule 1486, Term of License; Rule 1487, Address of Licensees
• 45-day comment period, June 19, 2026 - August 3, 2026
• Notice
• Proposed Text
• Initial Statement of Reasons

• CHRB Rule 1843.2 Classification of Drug Substances
• 45-Day Public Comment Period: June 19, 2026 - August 3, 2026
• Notice
• Proposed Text
• Initial Statement of Reasons

• CHRB Rule 1481, Occupational Licenses and Fees; Rule 1483, Application for License; Rule 1486, Term of License; Rule 1487, Address of Licensees
• Notice of Decision not to Proceed
• 15-Day Public Comment Period: June 30, 2025 - July 15, 2025
• Notice
• Modified Text
• 45-Day Public Comment Period: March 14, 2025 - April 28, 2025
• Notice
• Proposed Text
• Initial Statement of Reasons

• CHRB Rule 1588, Horse Ineligible to Start in a Race, Rule 1878, Workouts
• 15-Day Comment Period: March 20, 2026 - April 6, 2026
• Notice
• Modified Text
• 45-Day Public Comment Period: October 31, 2025 - December 15, 2025 (extended)
• Notice
• Proposed Text
• Initial Statement of Reasons
• Notice of Extension

• Supporting Scientific Material
• Risk factors for equine fractures
• Meta-analysis of risk factors for racehorse catastrophic musculoskeletal injury in flat racing
• Thoroughbreds deemed to be most at risk by inertial measurement unit sensors suffered a fatal musculoskeletal injury at a higher rate than other racehorses
• USTA Rulebook
• The Effect of Age on Thoroughbred Racing Performance
• The American Stud Book - Principal Rules and Requirements - The Jockey Club

Pursuant to Government Code 11343(c)(1), the California Horse Racing Board is required to post regulatory information for a minimum of 6 months. The official CHRB policy is to post this information for one year. To obtain any regulatory documents outside of the one-year mark, please submit a Public Records Act request by emailing information@chrb.ca.gov