STRATFORD, Ontario (Reuters) - A Canadian town known for its annual theater festival is emerging as a hub of "snowtonomous" research, as automakers face demands to produce self-driving cars that can perform in snow and sleet.

But testing driverless cars in cold climates brings added challenges to an industry grappling with the first fatality involving an autonomous vehicle.

On Sunday, an Uber Technologies Inc self-driving sport utility vehicle hit and killed a woman crossing the street in Arizona.

Blackberry said on Wednesday it will continue testing its self-driving concept car on the road in Ottawa.The Canadian province of Ontario, which allows autonomous vehicles on roads only if there is a human driver behind the wheel, has said it would follow the Arizona investigation and take "action if warranted."

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