The R17 class of cars was one of three fleets purchased in the mid-1950's to replace many of the pre-WWII Interboro Rapid Transit cars. There were 4000 cars in this class, all built by St. Louis Car Company. Among them were cars 6800-6809 which had air conditioning when delivered. The Air Conditioning experiment was considered a failure and the cars were refitted with the standard axiflow fans. As was the practice, the electrical components were split between General Electric (6500-6699) and Westinghouse Electric (6700-6899). The cars came equipped with low running lights at the ends. In 1957 headlights were added to the cars.
 
During the course of their careers, two cars (6673 & 6786) were wrecked in 1957 and three cars were destroyed by fire (6595, 6597, & 6601) in 1964. The last car was removed from service February 29, 1988.
 
* 5-Pole Skew-Wound Motor with Dual Flywheels * Close Coupled * Directional Lighting * Interior Lighting * Magnetic Knuckle Couplers
 

 
This set features a different shade of red from earlier models and also has a red roof. Includes powered unit #5552 and three unpowered units: #6508, 6868 and 6827.