A brief, 1-minute stop on the highway is martial law? You have no idea what martial law is, do you?
The problem is I have never been in a one minute stop, by the time I get to the actual checkpoint it has been at least 20 to 30 minutes. If I had been drunk I would have been sober by the time they got to me.
Or the opposite might happen. It takes a while for alcohol to be absorbed, and it is possible that by the time you reach the checkpoint you will be intoxicated whereas you otherwise might have been home in that time. And then you will be convicted, not because you behaved irresponsibly, but because of the checkpoint.