Erie Safety & Training Car #10 is a one-of-a-kind piece of railroad equipment that was used to familiarize employees with the operation of train and cab controls, as well as air brake and electrical systems from various types of diesel-electric locomotives in use at the time. Besides housing actual locomotive cab components and brake stands, the rest of the car was used for classroom seating for presentations and instructions.

This car was originally built as Erie Railroad 84-seat coach #2204, one of the first order for five steel through-line coaches on the Erie (#2200-2204) built by the Pressed Steel Car Company in 1917. These cars, while following some of the design patterns of the earlier "Stillwell" cars, were the first noticeable change in Erie passenger car development in a number of years. The #2204 was originally built with four-wheel trucks, but received six-wheel trucks from a retired baggage car sometime before 1924. When it was shopped at the Erie’s Susquehanna, PA passenger equipment shop in the late 1940s to add air conditioning, it also went back to riding on four-wheel trucks.

This particular car was chosen to be refurbished as the museum car for the Erie's Centennial Exhibition Train, commemorating the Erie's 100th birthday in 1951. With no further museum use, the car entered the shop again and emerged in April 1953 as safety & training car #10, replacing an training earlier car that had been built from a doodlebug. One of the original trucks from this doodlebug was reused under the new #10, and is still under the car today.

The #10 toured the Erie extensively, making stops at a variety of familiar railroad towns, including: Binghamton, Hornell, and Salamanca, NY; Meadville and Scranton, PA; Youngstown, Cleveland, Akron, and Marion, OH; Huntington and Hammond, IN; and Chicago, IL. The car continued in service after the 1960 merger of the Erie Railroad and Lackawanna Railroad to form the Erie Lackawanna, and remained in service until shortly after the 1976 formation of Conrail.

Erie #10 was sold to the Tri-State Railway Historical Society in January 1986. Partially restored and repainted by Tri-State in the late 1980s, this 100-year-old car is stored in stable condition. In September 2018, the car was moved from Madison, NJ to Boonton, NJ, where it awaits a full restoration. Tri-State also owns the collection of locomotive electrical diagrams that traveled with the classroom portion of this car in the 1950s and 1960s.