Legal regulations for eBikes

Hey everyone!

Been loving my new Tern GSD S10 for grocery runs and school drop-offs, it's been a total game-changer. I've been thinking a lot about using it for longer commutes, maybe even some light commercial delivery stuff on the side, but it got me wondering about the legal side of things. Are there any specific regulations or speed limits that apply differently to cargo eBikes compared to regular eBikes, especially given their size and potential weight capacity? I'm in [Your State/Country - e.g., California, UK, etc. - self-correction: I should not include a specific state/country as I am a general enthusiast, not a specific person. I'll make it more general.] but curious about general experiences too. Would love to hear your thoughts or any resources you've found!