The line's operator, the Transit Museum Society, also owns a large fleet of vintage buses and trolley coaches.
Until 1973, CTA's fleet included a large number of electric trolley buses - or "trolley coaches", as they were commonly known at the time.
In 1944, six new trolley coaches were purchased from Pullman-Standard, but that small batch was not followed by any other purchases from Pullman.
Overall, the company's best customer for trolley coaches was the Seattle Transit System, which bought a total of 177, all between 1940 and 1943.
The article Trolleybus gives a description of the electric trolley bus (trackless trolley; trolley coach) including technical details.
In Hamilton, where they were referred to as "trolley coaches", they were used from 1951 until the end of 1992.
They were converted to trolley buses-commonly known as "trolley coaches" at that time-as had happened previously with several other streetcar lines.
The Key System had ordered 40 trolley coaches from ACF-Brill in 1945 to convert the East Bay trolley lines.
As late as the 1960s, transit service in Dayton was provided "almost exclusively by trolley coaches".
It was the first new trolley coach purchased by any U.S. transit system since 1955.