| Year | Change |
| 1904 | Lebanon and Franklin Traction Company starts operations on May 28, 1904 |
| 1904 | Springfield, Troy and Piqua starts service between Springfield and Troy on July 4, 1904 |
| 1904 | Dayton and Muncie Traction Company opens line between Greenville and Union City on October 1, 1904. |
| 1904 | Springfield-Xenia Railway Company opens line between Springfield and Xenia in 1904. |
| 1904 | Springfield, South Charleston, Washington Court House and Chillicothe Traction Co. starts line between Springfield and South Charleston. |
