Bring the hammer down across the board. That's the only way anyone will ever start taking DD'ing seriously. 'Restricted Duty' is a tag line that makes it sound like a soft punishment.

Drunk drivers get a slap on the wrist, that's probably why even police officers aren't taking it seriously. Hopefully he doesn't get put back on that job of anti-drunken driving enforcement, he should be demoted or fired along with any other punishments.