Google incubator's New York City subway app offers Waze-like alerts
 

Crowdsourced navigation apps like Waze are helpful for avoiding the real-world hazards that conventional apps don't mention. But what if you use mass transit -- why can't you get alerts that go beyond official route closures and delays? You can now...

https://www.engadget.com/2018/06/03/...ty-subway-app/