The route ran along Cortelyou Road between Flatbush and Coney Island Avenues. It was decided to continue trackless trolley service and six additional coaches were purchased in 1931. 16th Avenue trolley service operating along Church, Gravesend, and 16th Avenues to 62nd Street was terminated at 16th and Gravesend Avenue and the line was renamed Gravesend-Church. Cortelyou Road trackless trolley service was extended from Coney Island Avenue through Cortelyou Road to Dahill Road and along 16th Avenue and 62nd Street to New Utrecht Avenue. Trolley coaches replaced with gas buses.
Buses replace trolley cars.
Trolley coaches replace buses between Boro Hall and Pennsylvania Avenue. Trolley coach service discontinued between Pennsylvania Avenue and Ralph Avenue. Trolley coaches replaced with gas buses. Buses replace trolley cars. Trolley coaches replace buses.