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WASHINGTON (Reuters) - Toyota Motor Corp (7203.T) plans to start selling U.S. vehicles that can talk to each other using short-range wireless technology in 2021, the Japanese automaker said on Monday, potentially preventing thousands of accidents annually.

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Toyota Motor's logo is pictured at the 45th Tokyo Motor Show in Tokyo, Japan October 27, 2017. REUTERS/Kim Kyung-Hoon

The U.S. Transportation Department must decide whether to adopt a pending proposal that would require all future vehicles to have the advanced technology.

Toyota hopes to adopt the dedicated short-range communications systems in the United States across most of its lineup by the mid-2020s. Toyota said it hopes that by announcing its plans, other automakers will follow suit.

The Obama administration in December 2016 proposed requiring the technology and giving automakers at least four years to comply. The proposal requires automakers to ensure all vehicles “speak the same language through a standard technology.”

Automakers were granted a block of spectrum in 1999 in the 5.9 GHz band for “vehicle-to-vehicle” and “vehicle to infrastructure” communications and have studied the technology for more than a decade, but it has gone largely unused. Some in Congress and at the Federal Communications Commission think it should be opened to other uses.

In 2017, General Motors Co (GM.N) began offering vehicle-to-vehicle technologies on its Cadillac CTS model, but it is currently the only commercially available vehicle with the system.Talking vehicles, which have been tested in pilot projects and by U.S. carmakers for more than a decade, use dedicated short-range communications to transmit data up to 300 meters, including location, direction and speed, to nearby vehicles.

The data is broadcast up to 10 times per second to nearby vehicles, which can identify risks and provide warnings to avoid imminent crashes,

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