Adams' family filed a federal civil rights lawsuit against the City of Chicago and several police officers Thursday.
Early Monday, minutes after leaving work at the Chicago Police Department's 10th District, 32-year-old Officer Taylor Clark was killed when his Jeep struck a Nissan at West Roosevelt Road and South Kostner Avenue. Adams was in the Nissan, waiting to make a turn.
Prior to the crash, the off-duty officer was pursued by an on-duty officer, who mistakenly thought he was involved in a carjacking. Surveillance video shows part of the pursuit.
Adams' relatives said the 27-year-old was looking forward to working at the Taste of Chicago as a security officer.
Chicago police have referred all questions about the incident to the city's Independent Police Review Authority, which has not commented on their investigation.
WATCH INTERVIEW WITH CHEQUITA ADAMS' FAMILY