of 2018 Transmilenio ordered 1383 new buses as a replacement of the older ones in service. 52% were compressed natural gas (CNG) buses made by Scania with Euro 6 emission rating, 48% were diesel engine made by Volvo with Euro 5 emission rating. More (or renewed?) orders have produced an impressive result: "To improve public and environmental health, the City of Bogotá has assembled a fleet of 1,485 electric buses for its public transportation system—placing the city among the three largest e-bus fleets outside of China."In the year 2022 Bogotá has won the Sustainable Transport Award, thanks to their BRT system and their urban cycling strategy. The system in Jakarta had also been experiencing issues, with complaints of overcrowding in buses and stations and low frequency of the routes. There were extensive safety concerns as well; rampant sexual harassment has been reported, and the fire safety of the buses has been under scrutiny after one of the buses, a Zhongtong imported from China, suddenly and spontaneously caught on fire. The quality of the service was so bad that the then-governor of Jakarta, Basuki Tjahaja Purnama, in march 2015 publicly apologized for the poor performance of the system. Failures and reversals A criticism of BRT systems was that they might not accomplish their promise of an efficient, rapid flow of passengers along their dedicated bus lanes. The unpopularity of Delhi's BRT(2016) and the riots and spontaneous user demonstrations in Bogotá(2016) raised doubts about the ability of BRTs to tackle issues such as traffic jams. Overcrowded stations and BRT vehicles might fail to keep pace with increased ridership. The speed of increased BRT ridership confirms the research to (the myth of) a general preference for rail over bus, see the end of chapter "Comparison with light rail". Bogota however has regained pace according to the Sustainable Transport Award 2022. The lack of permanence of BRT has also been criticized, with some arguing that BRT systems can be used as an excuse to build roads that others later try to convert for use by non-BRT vehicles. Examples of this can be found in Delhi, where a BRT system was scrapped, and in Aspen, Colorado, where drivers are lobbying the government to allow mixed-use traffic in former BRT lanes as of 2017, although in other US cities, such as Albuquerque, New Mexico, the opposite is true. Possible lack of permanence is as well part