This service serves local residents in Mixco and the South-west end of Guatemala City, and provides some connections to Transmetro lines.

The Express Roosevelt line began operations with 10 articulated units, capable of transporting up to 140 passengers each.

The Express Naranjo line was largest expansion of the network at the time of its opening.

Providing local and express service between Mixco and Guatemala city.

When the service was inaugurated, Mixco was the only issuer of smart cards compatible with the system.