[jancsika]

As useful data for sober civil libertarians who want the choice to route through a DUI checkpoint to exercise their rights.

I wouldn't code it because there's no way to disallow the service for the set of people over the legal limit trying to avoid a DUI checkpoint. But if, say, a group of sober civil libertarians find a way to tell each other how to always choose right-exercising routes, I don't see any obvious ethical problems with that.