page_title: Multi-axle bus
section_title: Articulated chassis
hierarchical_section_title: Multi-axle bus / Articulated chassis
caption_attribution_description: English: A Weavaway Travel bus on the forecourt of Oxford railway station, Oxfordshire, waiting to provide a rail replacement service. The bus is a Volvo B9TL with an East Lancashire Coachbuilders CH63/39F body, registration mark OU05 AVY.
context_page_description: A multi-axle bus is a bus or coach that has more than the conventional two axles, usually three, or more rarely, four. Extra axles are usually added for legal weight restriction reasons, or to accommodate different vehicle designs such as articulation, or rarely, to implement trailer buses.
context_section_description: Tri-axle is the standard arrangement of two part articulated buses.
  Quad-axle arrangement is sometimes employed on articulated buses to accommodate the extra weight of coach bodies, such as in this quad axle articulated coach Volvo Articulated Coach, and the quad axle double deck articulated coach, the Neoplan Jumbocruiser.  Quad-axle arrangement is also the exclusive arrangement for three part bi-articulated buses.
  A rare reason why a bus may have multiple axles is in the case of a trailer bus, where the bus passenger cabin is built as a body semi-trailer towed by a separate tractor unit.
caption: East Lancs bodied Volvo B9TL tri-axle double-decker bus in the United Kingdom
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