Not saying it is good or bad, but the original concept of Sobriety Checkpoints has expanded immensely. Most of them now are set up with at least one cruiser set up with an LPR, so while they stop and slow everyone down all license plates are being scanned immediately for any sort of violation on the tags. Expired vehicle emmissions being one of the biggest hits, Insurance violations, stolen tags and vehicles reported as stolen.. If you notice they write a lot of non alcohol related tickets at these check points.
And in the sense of public safety i am more worried about intoxicated drivers over someone who has not paid the vehicle emission tax.Most officers i have talked too favor saturation patrols over checkpoints as far as catching dwi offenders. Again not saying they are bad just that they have expanded their fish net immensely. They have basically turned them in to get them for whatever you can.