[101stAirborneVet]

Who gets to set the public safety standards? You see where this is going, don't you?

The courts do. And they have. Repeatedly. In decision after decision. There is ample case law on this exact issue.

[Alaska Wolf]

The courts do.

So law enforcement is required to have a court decision on whether a particular reason for a roadblock is legal, or does the court just set some general parameters for law enforcement interpretation?

[dasboot]

Yep.