I see problems like this as "points-in-time". There will eventually be a technology based solution to these sorts of things. Early warning systems, collision detection, even just pervasiveness of go-pro cameras as the price point brings it into "standard equipment" territory (thus allowing distinction between negligence and accident).

That doesn't help people who are currently being run over. I ride a motorcycle occasionally and I know that I'm accepting a significantly higher chance of injury or death by riding it. I would love to improve those odds but I don't look to the criminal justice system for it.