GRAND RAPIDS – Despite facing an uphill battle of legislation and regulation, 21 million fully and semi-autonomous vehicles will be sold globally by 2035, according to a forecast from Southfield-based IHS Automotive released Tuesday.

The U.S. is expected to lead the way with initial deployment and early adoption of autonomous vehicles as it works through challenges posed by regulation, potential liability and consumer acceptance.

U.S. autonomous deployment will start with several thousand vehicles in 2020 and then grow to nearly 4.5 million vehicles by 2035, IHS said.

IHS also expects that Japan will ramp up industry coordination and investment before the 2020 Summer Olympics in Tokyo. The forecast said that nearly 1.2 million vehicles will have some form of autonomous driving capability in Japan and South Korea, collectively, by 2035.

“Global sales of autonomous vehicles will reach nearly 600,000 units in 2025,” Egil Juliussen, director of research at IHS Automotive, said in a statement. “Our new forecast reflects a 43 percent compound annual growth rate between 2025 and 2035 – a decade of substantial growth, as driverless and self-driving cars alike are more widely adopted in all key global automotive markets.”

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