page_title: Alexander Dennis Enviro400
section_title: Internal layout
hierarchical_section_title: Alexander Dennis Enviro400 / Specifications / Internal layout
caption_attribution_description: English: Upper deck of the Alexander Dennis Enviro 400 bus.
context_page_description: The Alexander Dennis Enviro400 is a twin-axle low-floor double-decker bus that was built by the British bus manufacturer Alexander Dennis between 2005 and 2018, replacing the Alexander ALX400, Dennis Trident and Plaxton President. In 2014, the Enviro400 was succeeded by the updated Alexander Dennis Enviro400 MMC, and production of the classic Enviro400 ceased in 2018.
  The Enviro400 is available both as an integral bus and as a standalone bodywork and chassis. The Enviro400 chassis replaced the Dennis Trident 2 and was formerly available with East Lancs Myllennium Lolyne and Optare Olympus bodywork; the Enviro400 body replaced the Alexander ALX400 and Plaxton President designs and was sold on Scania N230UD, Volvo B7TL and Volvo B9TL chassis.
context_section_description: The Enviro400 features an innovative seating layout that maximises use of seating space on the lower deck by placing two forward-facing moulded seats onto the front nearside wheelarch box with a small luggage shelf on the rear half, and also (on full-height models) a single forward-facing moulded seat on the front off-side wheelarch hub between the driver's partition and the staircase.
caption: Upper deck of the Enviro400
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