Google maps has improved considerably in English. Back in 2011 it could not locate my neighborhood if you entered it in romaji (in any variant for the long Os.) All the directions were in Japanese. None of the motorway junctions or exits were shown in romaji, etc.

Today it has all of that and it even has bus routes out if you want to take public transport to some place out in Hachioji far from a train station.

There is a relatively new feature, namely showing the signs that you see at intersections/ traffic lights, which are important for navigation. They are only in Japanese even though they are always show in romaji.