They don’t really need a checkpoint. All they have to do is pull over the drivers who make a u-turn after seeing the sign.
“They don’t really need a checkpoint. All they have to do is pull over the drivers who make a u-turn after seeing the sign.”
You are closer to the reality than you know. Here’s the SOP on these. They put the “drug checkpoint one mile ahead” a half mile from an obscure exit ramp that has some cover around it due to vegetation or terrain. THAT is where the real checkpoint is located, to catch the early-exiters.