WASHINGTON -- Over the next two years, federal regulators will allow Mercedes-Benz USA LLC to sell as many as 5,000 vehicles with brake lights that flash during emergency stops.
The company says it wants to show that flashing brake lights improve safety by preventing rear-end crashes.
The National Highway Traffic Safety Administration previously refused to make a permanent change in a rule that requires steady illumination of lights. But NHTSA disclosed approval of a two-year exemption last week.
The flashing-brake-light feature, which is activated only when the brake pedal is pushed heavily for a hard stop, is available in Europe on Mercedes S-class, CL-class and SL-class cars.
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