major cities and towns provide some kind of public transportation including buses and taxis which implies making your way around in Brunei is not a difficulty.
Facts about pretty much all sorts of public transport in Brunei for example airlines, airports in Brunei, bus routes, driving maps and trains in Brunei are published here.
The tables beneath will give you more info on the travel choices to get around Brunei: Travel by rail, travel by air, and travel by bus and car.
Airports in Brunei
Public Transport in Brunei
Bruneian Public Transport Questions