Traditional buses are now required to discharge passengers at transfer stations at the city's edge to board the Transmetro. This is being implemented as new Transmetro lines become established. In conjunction with the new mass transit implementation in the city, there is also a prepaid bus card system called Transurbano that is being implemented in the metro area to limit cash handling for the transportation system. A new fleet of buses tailored for this system has been purchased from a Brazilian firm.