Legal regulations for eBikes

Hey everyone!

I've been seriously considering getting a cargo eBike, maybe something like a Tern GSD or a RadWagon, to replace some car trips, especially for grocery runs and school pickups. It got me thinking about the legal side of things, specifically around weight limits or passenger regulations. Does anyone know if there are different rules for cargo eBikes compared to regular eBikes, especially when you're loaded up with kids or a week's worth of groceries? I'm in [Your State/Country, e.g., California, UK - I'll leave this generic for now as I don't know the specific user's location, but in a real post I'd add it], and I'm just trying to make sure I'm fully compliant before I commit. Any insights or experiences would be super helpful!