120 in San Juan del Río Fed.

71 in San Francisco de los Romo Fed.

49 in Troncoso, Las Palmas y Jiménez Fed.

45) is the free (libre) part of the federal highways corridors (los corredores carreteros federales), and connects Ciudad Juárez, Chihuahua through the Chihuahuan Desert to Panales, Hidalgo.

[citation needed] Federal Highway 45D is the tolled part of the route; in some areas the two run in parallel with the tolled section being faster.