There was a North-South Shuttle route that traveled throughout Carson starting and ending at the Harbor Gateway Transit Center.

[1] On March 28, 2020, Carson Circuit suspended services due to respect for the ongoing COVID-19 pandemic.

At a July 20, 2021 City Council Meeting, Long Beach Transit proposed three new routes that they will acquire from Carson Circuit.

The shift in bus travel would replace the neighborhood-serving routes of the former Carson Circuit, which historically had low ridership, with longer-distance regional service, connecting several communities along the line.

[2] On September 7, 2021, City Council announced plans to reestablish Carson Circuit "as a staff-operated supplemental bus service utilizing existing minibuses".