Automotive Industry

I guess freeway is a hard limit. Other streets are more complex because of people and whatnot. GPS makes it easy to check.

Speed should also be a hard limit because a safe stop is much easier at slow speeds. More time to react and less pressure on sensor capabilities.

Traffic jam is probably not necessary but why would you drive that slowly on a freeway otherwise?

Not sure about daytime. It could be that it is just that the video camera doesn't work well enough such that the system deactivates a lot.