As of July 2017, by moving to the Bay Area or Rio de Janeiro: http://www.androidpolice.com/2017/07/08/google-confirms-speed-limits-google-maps-available-two-are

As of July 2017, by moving to the Bay Area or Rio de Janeiro: http://www.androidpolice.com/2017/07/08/google-confirms-speed-limits-google-maps-available-two-areas/ http://www.androidpolice.com/2017/07/08/google-confirms-spee...