Add an alert for when trains are within, say, 5 miles of a local crossing.
What a wonderful new feature it would be for Waze to add an upcoming train alert on the driver's route ahead. There are some local or regional train locater apps and an apparently national one by the Federal Railroad Administration (FDA), which I just downloaded. Not sure whether this app will notify me proactively, or just tell me what I already know as I sit stewing in a line at the railroad crossing waiting for the train to pass.
Adding this function in Waze, in a way that gives enough advance notice to reroute, if desired, would be super helpful and negate the need to use yet another driving-related app. Maybe the FDA, which apparently is a taxpayer-funded agency, will allow you to use their API. Please get on this, Waze development team!