text: In 2010, Rhino Handmade re-released the original quadraphonic mix of the album on a limited edition DTS DVD, and in 2016, in DTS-HD Master Audio, as part of Chicago Quadio Box Set.
  On June 26, 2019, Rhino Records announced a 50th Anniversary Remix edition of Chicago Transit Authority, offering it in both CD and double LP formats. Although the press release announced an August 30, 2019 release date, the date was pushed back to September 13, 2019 outside of Canada. The band worked with engineer Tim Jessup, who also mixed the band’s Live at the Isle of Wight Festival. Robbie Gerson, reviewing the vinyl release for Audiophile Audition, gave an overall positive review, saying, "Rhino has done an outstanding job in re-mastering Chicago Transit Authority to 180-gram vinyl." In his review for All About Jazz, Doug Colette gave the CD four out of five stars, noting that there's "less precedence for the harmony singing," but that there's "wallop to the drums," "edge to the guitar," and "great care throughout to highlight, without overstatement but with proportionate accuracy and impact, the tightly-fused rhythm work of drummer Danny Seraphine and bassist Peter Cetera: both sound equally vigorous and muscular in their playing."