I could be wrong, but aren’t a lot of injuries caused by being rear-ended while waiting at a red? I’m pretty sure that’s the case for motorcycles so I imagine it’s similar for bikes. I normally wait at reds but I’ll run it if there’s no traffic. It feels more like jay-walking than running a red light. Most people are perfectly fine with jay-walking.
When people refer to metal balls as ball bearings. A ball bearing is an assembly of outer ring, inner ring, balls, and a cage/retainer. I worked in bearing manufacture for years and they’re just referred to as balls. To be more specific, it would be a bearing ball, not a ball bearing.