It appears that they are testing this out at truck weigh stations where all commercial drivers have to stop anyway. Adding these random searches to that routine.
Not all trucks are stopped at the weigh stations now. They have weigh-in-motion sensors in the roadway now with in-cab transponders for the drivers. Electronic signs on the road that say... TRUCK MUST EXIT TO WEIGH STATION or TRUCK OK TO BYPASS.
These check points I’m seeing are at different locations separate from the weigh stations.
Are they for all vehicles, or just the big rigs?