Wheelchair-accessible routes are rolling out starting today to five major metropolitan transit centers: Boston, London, Mexico City, Sydney, and Tokyo. In the coming months, Google will be working with more transit agencies to bring more of these routes to Maps.
https://www.androidpolice.com/2018/03/15/google-maps-adds-wheelchair-accessible-routes-public-transit-navigation-starting-six-major-cities/
https://www.androidpolice.com/2018/03/15/google-maps-adds-wheelchair-accessible-routes-public-transit-navigation-starting-six-major-cities/