Automakers have moved quickly to install louder, more persistent seat belt reminders, the Insurance Institute for Highway Safety said today. IIHS began rating the devices in 2022. The first year, only 17% of the new models tested earned a good rating; 65% were rated marginal or poor. However, 62% of the 2024 models tested so far are rated good. Only 24% are rated marginal or poor.

“The math is pretty simple,” said David Kidd, the IIHS senior research scientist who led that research as well as the development of the seat belt reminder rating program. “We found that an audible reminder that lasts at least 90 seconds increased belt use by around 30%. That means we could save almost 1,600 lives a year if every vehicle on the road was equipped with a good-rated system.”

An IIHS study found that a persistent reminder was much more effective at getting part-time users to buckle up than a minimal reminder and just as effective as a speed-limiting interlock that kept the vehicle speed under 15 mph unless the driver was buckled in.