Dear on duty!
I drive a lot to work and back. Hours each day. Mostly, I use the app to foresee road blocks so I could re-route through back roads that even Waze doesn't know about.
But I get a lot of useless notifications like "left lane blocked" or "fog". These notifications are pointing out the obvious. You wasted time programming, I wasted time reading it. This morning the app told me "bad weather"! This flipped my lid off. Like what? I'll explain.
How do you measure good or bad? Bad for who? It's latitude 59, it's December. I'd say +7C is not bad weather. Yes, it's off statistics (it should be -10C), but it's not bad. It could be sleeting sideways. It was just dark and rainy. Get over it!
The information I need is the kind that makes me make decisions as I drive. Stuff like potholes, dead bodies, zombies, vegans, accidents ahead - those fleeting hazards. My eyes are fine, checked by doctors - I can see it's foggy. Typically I saw that fog hours before your notification - your notification is hours late. I can see the left lane block miles before your pop-up thing. There are traffic signs, remember?
I know people like to report, post, and share everything they see, it gives them some sort of satisfaction. A little good deed per day - I reported poor weather on Waze (Go Karen!). Keep the possibility, but don't show it to everyone driving by.
What you can do with the obvious information is push it out in advance. When I tap "drive me Home" on the screen, it then plans my route. And now it could come back with a notification covering the possible hazards on the planned route - traffic jams, slippery road, poor visibility, etc. I can make decisions before I hit the road. I can take a phone call home warning that I may be late for dinner due to poor road condition.
Every piece of information has value, but the timing must be correct, otherwise it's just noise.