Articulated buses, also known as bendy buses or accordion buses in the US and UK, have an increased passenger capacity. Found almost exclusively in public transportation use, these buses are approximately 18 m (60 ft), while regular buses are 11 to 14 m (35-45 ft). To make them nimble enough to safely navigate streets at their increased length, they are fitted with an extra axle (set of wheels) and a joint usually located slightly behind the midpoint of the bus, behind the second axle.