1919: First law made liability insurance a requirement. 1974: Mandatory proof-of-insurance required during traffic stops. 1987: State Supreme Court upheld the law. 1988: Proposition 103 reformed insurance rates and regulatory oversight.
1919: First law made liability insurance a requirement. 1974: Mandatory proof-of-insurance required during traffic stops. 1987: State Supreme Court upheld the law. 1988: Proposition 103 reformed insurance rates and regulatory oversight.