keep directions on the screen
Using Waze is for directions of not knowing where to go so I think you need to go back to the small alerts on the screen instead of taking up the directions spot and having them disappear. It’s very frustrating trying to find your way through a city you’ve never driven in before when the directions keep disappearing to alert you that there’s a car on the side of the road.
David C commented
This... 1000x this. Constantly needing to tap screen to clear notification is not good UI decision. Especially when you advertise the Car Play settings for safety; I'm about to tell my wife to use [gasp] Apple maps instead!