Route 7 is a 1,224 kilometer route from Buenos Aires to Mendoza. The Western Highway was completed in 1998 and replaced the old Rivadavia Avenue.

There are no CNG stations in the 440-kilometer segment to travel from Junín to Villa Mercedes. The maximum speed is 120 kilometers per hour on the highway and 110 km per hour in sections with one lane per lane. For motorists, Route 7 imposes another call of attention in mind in the succession of dangerous slopes.