Have a way for users to contest a traffic notice entered by other users. Here in Los Angeles we use a lot of residential streets, especially to get through the canyons. Lately, residents on smaller streets have been adding fake/erroneous notices such as hazards (e.g., construction) or road closures to try to get drivers to take other routes. It would be great if Waze had one of three options: users can delete false reports, users can comment on reports for all users to see (not just the person who reported the issue), or a thumbs down feature so that other users have some indication of what is going on. OR...Waze could find a way to track erroneous entries and ban those users.