Neat feature...

These new off-route alerts in Google Maps will send an alert to your phone every time you get sidetracked from the intended course by 500 meters. Besides ensuring your safety, the feature should also help you avoid being tricked by a cab driver while traveling to an unfamiliar part of the city. As expected, your route wont get rerouted automatically (as it would otherwise) when youre hitting on the wrong road. Of course, apart from when youre riding a cab, the feature should also be of use if youre driving yourself.
Spotted in India. Have not seen it on an updated phone, here in HK.

https://www.xda-developers.com/googl...oes-off-route/