Checker Series E

Transit Buses had been formed as a joint venture between Ford Motor Company and UCBC in the 1930s; buses were assembled by UCBC by fitting their body to a Ford chassis, engine, and transmission.

In 1947, Ford withdrew from the transit bus market and stopped supplying chassis and powertrains to Transit Buses; Transit Buses designed a new bus using the Continental I6 "Red Seal" engine and contracted Checker to build the chassis starting in 1948, with UCBC still responsible for final assembly in Union City.

However, sales of the contemporaneous General Motors "Old Look" buses, originally designed by Yellow Coach, were much stronger and Checker withdrew the Series E in 1953.

[1] Morris Markin formed the Checker Cab Manufacturing Company in July 1922 by merging two prior acquisitions: the Lomberg Auto Body Manufacturing Company (acquired 1920) and Commonwealth Motors (1921).

Commonwealth sold the Mogul Taxi between 1918 and 1921, which used a body by Lomberg on a Commonwealth chassis; Checker continued Mogul Taxi production through 1928 with minor changes as the Models H, H2, E, F, and G.