A tactic used by the federal government to gather information for anti-drunken and drugged driving programs is coming under criticism in cities around the country, and some local police agencies say they will no longer take part.
The tactic involves a subcontractor for the National Highway Traffic Safety Administration that uses off-duty but uniformed police at voluntary roadside checkpoints where motorists are asked on their behavior behind the wheel. In some cases, workers at the checkpoints collect blood and saliva samples, in addition to breath samples. NHTSA has said previously that the surveys do not collect any DNA. Drivers are not charged at the checkpoints.