"Sobriety checkpoints" refer to designated highway locations where law enforcement officers stop and inspect vehicles to check if drivers are under the influence of alcohol or drugs. Full definition
Bonus question - does some other national / federal authority (e.g., the NHTSA, DOJ, newer court cases, etc.) have any rules, regulations or guidelines that govern local and state law enforcement agencies» operation of sobriety checkpoints? (law.stackexchange.com)