Peseros are typically half-length passenger buses (known as ''microbús'') that sit 22 passengers and stand up to 28. , the approximately 28,000 peseros carried up to 60 percent of the city's passengers. In August 2016, Mayor Mancera announced that new pesero vehicle and concessions would be eliminated completely unless they were ecologically friendly vehicles, and in October 2011 the city's Secretary of Mobility Héctor Serrano states that by the end of the current administration (2018) there would no longer by any peseros/microbuses circulating at all, and that new full-sized buses would take over the routes.