Allow the user to keep the route from changing
Tonight I was driving home with family during the season’s biggest rain storm. Initially Waze set a good route across major freeways that are relatively safe in the rain. Then it suggested a re-route across a windy mountain road (Angeles Crest Highway) instead of the major freeway in order to save only about 2 minutes. Of course I hit No. It kept suggesting other re-routes as well, including driving across older freeways through downtown LA that are prone to flooding, and I hit No again. Each time it would barely save any time to do such re-route. But it would be much more dangerous. Then when I couldn’t pay attention to the Waze app it re-routed me through older flood-prone freeways anyway! This was incredibly annoying because it made the drive more nerve-wracking as some sections of this freeway had poor drainage. I wish that Waze would have some way to optionally “lock” the route in place so that a preferred route is NOT re-routed even if the driver is not babysitting the app.