TLDR: Looking for a 3+ wheeled vehicle that can be locked up like a bike and maybe taken on a bus.
So my sister has health issues that means she can’t drive/get a license, and that she’d most likely fall over on a scooter. She mostly walks/busses around, but the bus system is closed on sundays and makes life difficult.
So yeah, wondering if there is anything that would be allowed on sidewalks/bike lanes with 3+ wheels and a bit more speed than walking so she can increase her range that she can get to, but like be able to be chained to a bike rack.
IDK bit of a stretch, but maybe you all know something!
They make three wheeled bikes. Frequently they are set up as cargo bikes. Also some recumbent bikes have three wheels (sometimes double front, sometimes double back). I looked into a cargo trike when I was bike shopping but ended up with a cruiser with baskets and a trailer. A trike sounds like something that may work for your sister though!