Mobile food preparation vehicles; mobile food establishments, fire and life safety code compliance, permit, inspection, and rules; annual operation permit decal to mobile food preparation vehicles; licensure conditions; effective date.

HB 4121 requires mobile food preparation vehicles in Oklahoma to comply with updated fire and life safety codes. It mandates annual inspections by the State Fire Marshal, including a six-liter Class K fire extinguisher for grease-related cooking, and establishes an annual operation permit decal system. The bill directly affects mobile food vendors operating within Oklahoma, particularly those using gas for cooking or producing smoke/grease. Key provisions include standardized inspections across the state (with increased frequency in high-population counties), a unified fire safety code, and a clear expiration of current requirements on January 1, 2026. The law takes effect November 1, 2026.