Bangar is small enough for you to walk around, although it could be quite a hike in the hot sun to get to the administrative offices across the river from the commercial area.
Temburong basically has two main roads, one stretching from its eastern border with Sarawak at Puni, through Bangar, to the western border, again with Sarawak, at Labu, a total of about 25km. The other main road runs south from Bangar to Batang Duri.
You will have to resort to taxis to move around in Temburong if you do not have your own set of wheels. There are no buses. Taxis can cost a bit - Bangar to Labu is about B$30.
You can also hire bicycles from the Maryani Camping Shop at Bangar for B$30 dollars a day.
