Between 1937 and 1945 the system was converted to trolleybus operation, which worked on the same paths as tram system, with the exception of the Hedon Road and Corporation Pier branches which became diesel bus operated.
The system was converted to trolleybus operation. This was between 1937 and 1945. Trolleybus operation worked on the same paths as tram system. This was with the exception of the Hedon Road and Corporation Pier branches. This exception of the Hedon Road and Corporation Pier branches became. Diesel bus operated.