SIT Optibús (officially Sistema Integrado de Transporte Optibús) is a bus rapid transit (BRT) system  operating in León, Guanajuato, Mexico. Locally it is known also as "La Oruga" (the caterpillar), due to its use of articulated buses. Most of the Optibús route uses city streets, but with dedicated bus lanes and high-level platform stations.
SIT Optibús, or Sistema Integrado de Transporte Optibús, is a bus rapid transit system in León, Guanajuato, Mexico. It's nicknamed "La Oruga" (the caterpillar) because of its use of articulated buses. The majority of the route uses city streets but features dedicated bus lanes and elevated platforms.