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Cal. VEH § 25257

This is the official text of Cal. VEH § 25257, part of California’s Vehicle Code — governs traffic laws, driver's licenses, and vehicle registration.

Not legal advice. This page reproduces the official text of a government statute for reference only. Laws change, and how a statute applies depends on your specific facts. For advice about your situation, consult a licensed attorney in your state.

Official statutory text

(a) Every schoolbus, when operated for the transportation of schoolchildren, shall be equipped with a flashing red light signal system.

(b) (1) Every schoolbus manufactured on or after September 1, 1992, shall also be equipped with a stop signal arm. Any schoolbus manufactured before September 1, 1992, may be equipped with a stop signal arm.

(2) Any schoolbus manufactured on or after July 1, 1993, shall also be equipped with an amber warning light system, in addition to the flashing red light signal system. Any schoolbus manufactured before July 1, 1993, may be equipped with an amber warning light system.

(3) On or before September 1, 1992, the department shall adopt regulations governing the specifications, installation, and use of stop signal arms, to comply with federal standards.

(4) A “stop signal arm” is a device that can be extended outward from the side of a schoolbus to provide a signal to other motorists not to pass the bus because it has stopped to load or unload passengers, that is manufactured pursuant to the specifications of Federal Motor Vehicle Safety Standard No. 131, issued on April 25, 1991.

Status: in_force · Read it on the official government site

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About this page: Statute text is reproduced from official government publishers via the Open US Law dataset (Vaquill AI, snapshot v2026.08, CC BY 4.0). Primary legislative text like this is public domain under the government-edicts doctrine (Georgia v. Public.Resource.Org, 2020). We link every section back to its official source so you can verify it independently.