In MI, you can re-take the written the same day you fail it. I don't know if there's a limit on the number of times you can do that in a day, though.
The road test isn't administered by the state so that's a bit more problematic -- but I don't know the laws nor anyone who has failed and had to learn about things the hard way.
The road test isn't administered by the state so that's a bit more problematic -- but I don't know the laws nor anyone who has failed and had to learn about things the hard way.