Autobuses Pisei, S.L. was founded by D. Ginés Prieto in 1960. It is a Madrilenian company that has been building an urban transport line integrated into the Madrid Transport Consortium since the year it was founded. The company runs the line that covers the distance between Los Cármenes and Plaza de Isabel II, in the center of Madrid. Service carried out with 11 buses equipped with technological advances and money and ticketing systems that allow the cancellation of the consortium's titles. The facilities on Secoya Street No. 20 in Madrid have offices and garages where its eleven buses rest and a total of 30 employees work, including drivers, workshop staff and offices.