Add AVOID COLLISIONS on the avoid list. Waze will send me a notification of a collision before my commute but still offers only routes that all take me past the collision. There are plenty of surface routes as an alternative to the freeway I usually take, but Waze won't use them. I would rather arrive at work 5-10 minutes late taking a surface street than 30 minutes late because of following the routes on the freeway with the collision(s).