A federal database built to flag and remove drunk and drugged truckers from U.S. highways used the equivalent of an “honor system” as its last line of defense between a family in a minivan and a substance addict steering an 80,000-pound mass of steel.

The Federal Motor Carrier Safety Administration (FMCSA) launched its Drug and Alcohol Clearinghouse in early 2020 to improve road safety by providing employers, law enforcement, and state agencies with real-time information on substance-use violations by commercial drivers.