DUI checkpoints
Roadside intoxication screening
DUI checkpoints are roadside stops where police systematically screen drivers for intoxication.
Officers briefly detain passing motorists to check for signs of impairment—slurred speech, alcohol odor, erratic behavior.
Also called sobriety checkpoints.
Their legality varies by jurisdiction; some states prohibit them as unreasonable searches.
They set up DUI checkpoints on New Year's Eve.
- probable causeLegal threshold for searches
- Fourth AmendmentSearch and seizure protection
- traffic conesPortable roadway warning markers
- sobriety testsProcedures detecting intoxication
- field sobrietyPolice impairment screening
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- traffic rulesspeed limits, stop signs, traffic lights, traffic signals, road signs
DUI checkpointsfreedom of movement
Liberty to travel unimpeded
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