President-elect Donald Trump has asked the US Supreme Court to put that ban on hold. TikTok, for its part, has said it prioritizes safe livestreaming.

Over 100 countries in the world have a 0.05% legal limit or lower. The only other US state with a limit that low is Utah. After the limit was lowered there, the state saw a 20% drop in fatal crashes.

Sarah Fotheringham, a 37-year-old school canteen worker in Utah, says the move to RedNote is a way to "snub" the government. "I'm just a simple person living a simple life," Ms Fotheringham told ...