Transmetro is a bus rapid transit system in Guatemala City, Guatemala. The first line opened on 3 February 2007. The fleet consists of modern Volvo buses made by Ciferal in Brazil. The buses have fixed stops and partly run on dedicated lanes, avoiding other traffic. Both stops and vehicles are guarded by municipal police. Service began in 2007 with a route between the City Hall (Municipalidad) and a market place at Centra Sur. The second route, Eje Central, started operations on August 14, 2010. This route serves the central corridor between 6th and 7th Avenue of Zones 1, 4, and 9.

Bus rapid transit (BRT), also referred to as a busway or transitway, is a bus-based public transport system designed to have much more capacity, reliability and other quality features than a conventional bus system. Typically, a BRT system includes roadways that are dedicated to buses, and gives priority to buses at intersections where buses may interact with other traffic; alongside design features to reduce delays caused by passengers boarding or leaving buses, or paying fares. BRT aims to combine the capacity and speed of a light rail transit (LRT) or mass rapid transit (MRT) system with the flexibility, lower cost and simplicity of a bus system.