The Mexibús Line IV is a bus rapid transit (BRT) line in the Mexibús system. It operates between the Universidad Mexiquense del Bicentenario (UMB) in Tecámac and Indios Verdes metro station in Gustavo A. Madero, Mexico City. It was the fourth line to be built and the fourth to be opened. It was inaugurated by the governor of the State of Mexico, Alfredo del Mazo Maza on 24 February 2021. It has 28 operative stations and one is under construction. It is 22.3 kilometers (13.9 mi) long. The line has two different types of services, and both include a service exclusively for women and children named Servicio Rosa (Pink Service). The line operates with 71 buses.