Significant portions of these routes utilize track leased from Union Pacific or Dallas Area Rapid Transit.

[1] In 1992, short-line operator Rail-Tex announced the creation of DGNO, a 62-mile (100 km) railroad connecting Garland, Greenville, and Trenton.

The proposed right-of-way was owned by Union Pacific; UP sold the Greenville/Trenton segment to Rail-Tex and leased the rest.

[2][3] In 1999, DGNO leased an additional 89 miles (143 km) of track from Union Pacific and Dallas Area Rapid Transit (DART).

Also included in the deal were trackage rights to a Burlington Northern & Santa Fe corridor between Sherman and Irving.