Governor Gavin Newsom of California has vetoed a bill that would have required all new cars in the state to have a system alerting drivers when they exceed the speed limit by more than 10 mph. The legislation aimed to reduce traffic fatalities by making California the first state to mandate this technology. Supporters believed it would lead to nationwide changes in vehicle safety features, similar to past emissions regulations. The technology, known as intelligent speed assistance, is already in use in Europe and has been proven to reduce speeding and improve road safety. However, the proposal faced opposition from car manufacturers and dealers who argued it would create regulatory confusion. Governor Newsom sided with the industry, stating that California-specific requirements would disrupt the federal regulatory approach. Critics suggested waiting for the National Highway Traffic Safety Administration's evaluation of the technology instead of implementing state-specific rules. Senator Scott Wiener, who introduced the bill, compared it to the historical impact of seatbelt laws, emphasizing the importance of California taking a leading role in promoting road safety. Despite the veto, advocates remain concerned about the risks associated with speeding and the missed opportunity for California to set a national precedent.