The civil rights organization said they want people who believe they were racially profiled during traffic stops to put those claims in writing.
They said they're hearing about more stops in minority communities than in white ones.
In some cases, they said police cooperated when contacted for information. Reginald Woods said he received a letter from the Internal Affairs Unit in Durham following a complaint.
However, others are currently under review, like Lelynd Darkes' complaint of multiple race based stops in Raleigh between 2010 and 2011.
A Raleigh Police Department spokesman said Darkes was cited for misdemeanor possession of marijuana and released on May 5, 2011, but did not comment on the case further. He also confirmed there's an RPD policy for non-biased policing.
"My son Lelynd, like everyone, should have the freedom to drive legally through his community, his city, his state, with the confidence that he will not be randomly and unjustly stopped by police officers," Lelynd's mother Lynette Aytch said at the campaign launch in Raleigh.
The ACLU also referenced a 2012 study on racial disparities by UNC Professor Frank Baumgartner Tuesday.