Pullman car company. Twenty were manufactured, all featuring center-bay doors for boarding on low-platforms. The streetcars were meant for more local service, which also means they had a lower passenger seating limit, only 86 patrons. In 1913 it was found that they had too many streetcars for the low demand of the line, so ten cars were sent to the Pacific Electric for operation there. However, two cars were brought back in 1919 due to a need for more streetcar services. In 1926, because of declining patronage, the streetcars were sent to rival Key System for operation on the subsidiary East Bay Street Railways (EBSR). However, the EBSR was converting to one-man operation, which means that the motorman acts as the conductor too, and the streetcars were built for the traditional two man operation (meaning there would have been a motorman and a conductor). This led to their downfall, and in 1933 all were scrapped. Operating Practices and Improvements The usual operating practice was that the number of powered cars in a train was at least one more than the number of trailers. Trailers, with or without train controls, were always placed in the middle of trains; train controls on trailers were mainly used in assembling or disassembling trains. As ridership declined and trains became shorter, trailers were primarily used only during rush hour. Combos were used to carry checked baggage to and from main-line trains at Oakland Pier and to deliver bundled newspapers. They were usually put on the end of the train toward Oakland Pier, and most commonly on the 7th St Line as far as Havenscourt or Seminary Avenue. When plans for longer routes were not implemented, 21 of the ACF combos were changed to motors at the time they received their round end windows in the 1920s. Due to the heavy grades on the Bay Bridge, 10 trailers were changed to motors in 1938 when all the passenger-carrying cars were modified with automatic train control and other safety equipment for bridge operation. The California Toll Bridge Authority (TBA) funded these changes and received title to 58 cars in return. All cars carried the name "Southern Pacific Lines" until Bay Bridge service began, when the IER-owned cars were repainted with "Interurban Electric Railway Company". Aftermath Lines Revival of Lines for Key System The rival Key System assumed rights to some of the trackage and overhead wires of