California Car Modification Laws 2025 Pdf. As of january 1, 2025, california has implemented several new driving laws to enhance road safety and ensure greater accountability among drivers. A california state senator has introduced draft legislation that would compel car manufacturers to install limiters to stop new vehicles going 10 miles beyond the local speed limit.

Assembly bills will be abbreviated to ab, and senate bills will be abbreviated to sb. Sb 639 (enacted in 2021) by.