The Operating Mobile Generator Car No. 3530 was introduced in 1956 and was a new design by Lionel. It would be produced for another two years. Produced on a BLUE body with a WHITE painted stripe and heat-stamped lettering.
This generator car came with a telephone pole No. 3530-50 and a floodlight No. 3530-12. The floodlight would light up with the opening of one of the doors on the car. These were available for separate sale and included both the telephone pole with either a BLUE or BLACK transformer base and the magnetic base searchlight. A YELLOW transfomer base has been found as part of an F-3 Rio Grande Set No. 2291W that was released in 1956.