<div>California could become the first state to require technology in cars that warns drivers when they're going 10 miles per hour over the speed limit. Critics say federal regulators should make the call.MARY LOUISE KELLY, HOST: Your car probably tells you when you're running out of gas. It might tell you when you drift out of your lane. Now, a bill in California would require your car to warn you when you are speeding. Safety advocates say so-called speed assistance technology can reduce traffic deaths, but critics say California lawmakers are the ones moving too fast. NPR's Joel Rose reports.JOEL ROSE: When State Senator Scott Wiener introduced his bill to limit speeding, he expected some pushback.SCOTT WIENER: It did touch a nerve because when it comes to driving in the U.S., there's a culture of freedom - I can do what I want to do.ROSE: Still, the intensity of that response caught Wiener, a Democrat from San Francisco, by surprise.WIENER: The day that I announced the original version of the bill, one of my very best friends in the world texted me to tell me what a terrible idea it was, and then 10 minutes later, his boyfriend texted me to say, thank you for getting my boyfriend to slow down.ROSE: To understand why the bill was so divisive, it helps to know how speed assistance technology works. There's an active version, which can prevent you from driving over the speed limit, but there's also a passive version of speed assistance that only warns the driver when they're going too fast. After the pushback, Wiener decided to change his bill from active to passive.WIENER: So we listened, and we heard. And the bill would not have passed with the active speed limiter, and it did pass with the passive speed limiter.ROSE: The bill approved by the California Legislature over the weekend would require all new cars sold in the state to warn drivers if they're going more than 10 miles per hour over the speed limit. California would be the first state in the country to mandate speed assistance technology, starting with the 2030 model year. The bill has big backers, like the National Transportation Safety Board. Here's NTSB Chair Jennifer Homendy last year.JENNIFER HOMENDY: Twelve thousand people are dying on our nation's roads annually due to speeding-related crashes. Nobody has a right to speed. Nobody has a right to break the law.ROSE: But to critics, this bill is still too much, too soon.JAY BEEBER: The technology is not perfect. This is problematic. You're going to have a lot of false positives.ROSE: Jay Beeber is with the National Motorists Association, a driver advocacy group. He says it's easy for speed assistance technology to get confused, especially between highways and nearby surface streets with vastly different speed limits. Beeber thinks that will annoy and potentially distract drivers.BEEBER: Unfortunately, our cars right now are kind of in the business of distracting us. I think this increases distracted driving.ROSE: The auto industry doesn't like the speed assistance bill either. Karen Bailey-Chapman is with the Specialty Equipment Market Association, a trade group. California is a huge market for carmakers, and Bailey-Chapman says the state is trying to bully its way into setting policy for the whole country.KAREN BAILEY-CHAPMAN: It's another example of California's overreach. We believe that the authority for regulations stands firmly within the federal government.ROSE: But the bill's sponsor, Scott Wiener, says California can't wait for federal regulators. He compares the situation to the early 1960s, when Wisconsin moved to require seat belts more than six years before the federal government did.WIENER: How many lives have been saved because Wisconsin stepped out ahead of the federal government in 1962 and required seat belts, which started a domino effect nationally?ROSE: Wiener's speed assistance bill now goes to California Governor Gavin Newsom. He has until the end of the month to decide whether he'll sign it into law. Joel Rose, NPR News.(SOUNDBITE OF CHARLI XCX SONG, "360")Copyright © 2024 NPR. All rights reserved. Visit our website terms of use and permissions pages at www.npr.org for further information.NPR transcripts are created on a rush deadline by an NPR contractor. This text may not be in its final form and may be updated or revised in the future. Accuracy and availability may vary. The authoritative record of NPR’s programming is the audio record.</div>

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California could require technology in cars to warn speeding drivers

California could become the first state to require technology in cars that warns drivers when they're going 10 miles per hour over the speed limit. Critics say federal regulators should make the call. MARY LOUISE KELLY, HOST:. Your car probably tells you when you're running out of gas. It might...

California could require technology in cars to warn speeding drivers

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