Cal. SHC § 124.1

(a) Upon completion by the department of a safety study and a determination by the director, with the concurrence of the Commissioner of the California Highway Patrol, that truck traffic attributable to the United States-Mexico border crossing at Tecate in San Diego County constitutes a safety hazard to schoolbus operations, the department shall determine methods of mitigating the safety hazard, including, but not limited to, prohibiting the use of truck tractor-trailer combinations on Route 94 from the communities of Boulevard and Manzanita to the junction of Route 54 (traveling east and west) during the hours of 6 a.m. to 9 a.m. and 2 p.m. to 5 p.m. on those days that public school districts utilize that portion of Route 94 to operate schoolbuses, as defined in Section 545 of the Vehicle Code.

(b) Any person operating a vehicle on Route 94 in violation of this section is guilty of an infraction punishable as provided in Section 42001 of the Vehicle Code.