Brunei has one form of public transport, the Franchise Bus, formerly known as the Purple Bus, and it’s the cheapest way to get around town, with an average fare of BND1 per ride! It serves six lines, which are distinctive thanks to the bright colours of the buses. The Eastern Line, which is the royal blue bus, and the Northern Line, marked as the green bus, pass through the international airport. Do take note that the service runs from 6am until eight in the evening. A map of the bus routes can be found here.