Jakarta, Indonesia is trialling electric buses on some routes as part of a strategy to make the city more eco-friendly. With almost 200 million passengers a year, the Indonesian capital has the world’s largest public bus system – as well as some of the world’s worst traffic congestion and air pollution. To meet demand, the Transjakarta Bus Rapid Transit System is adding more buses to its fleet and increasing the number of routes. But in order to reduce greenhouse gas emissions, the government wants to transition to cleaner transport. Transjakarta has begun testing electric buses, or e-buses, on public roads and plans to allow passengers on board once it has conducted further testing and obtained the necessary permits.