Federal Highway 2D (Spanish: Carretera Federal 2D, Fed. 2D) is a part of the federal highways corridors (Spanish: los corredores carreteros federales), and is the designation for toll highways paralleling Mexican Federal Highway 2. Seven road segments are designated Highway 2D, all but one in the state of Baja California, providing a toll highway stretching from Tijuana in the west to around Mexicali in the east; one in Sonora, between Santa Ana and Altar; and another between the cities of Matamoros and Reynosa in Tamaulipas.