Setra S 531 DT double-decker bus of the TopClass 500. Maximum efficiency, variability, comfort and safety, exciting design: world premiere of the new Setra S 531 DT double-decker bus
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Maximum efficiency and variability, supreme comfort and the ultimate in safety: the new Setra S 531 DT double-decker bus of the TopClass 500 sets new standards in its class. With superlative aerodynamics, this impressive touring coach is all set to establish new fuel efficiency records in its segment. With its flexible lower deck, it covers the entire scope of applications in touring and regular services. The interior boasts an impressive standard of comfort. Finally, the use of Active Brake Assist 4 and Sideguard Assist on board the new double-decker bus will mark the world premiere for these assistance systems in the bus and coach segment. These systems further enhance the already high standard of safety. All this is cloaked in a fascinating design with its own distinct stamp.
Safety: world premiere for Active Brake Assist 4, Sideguard Assist in the bus and coach segment
The very highest safety as standard – courtesy of Daimler Group technology. The premium brand's new double-decker comes as standard with long-life LED headlamps which are kind on the eyes. The emergency braking system Active Brake Assist 4 (ABA 4) is being introduced in the bus and coach sector for the first time ever on board the S 531 DT. In addition to the previously available functions – maximum full-stop braking in response to stationary objects and obstacles moving ahead of the vehicle – it now also incorporates pedestrian detection with automatic braking response. Another world premiere in the bus and coach segment is the use of Sideguard Assist on board the new double decker. This employs radar sensors to monitor the lane to the right of the bus along the vehicle's entire length. When turning off and cornering, it warns the driver of pedestrians, cyclists and stationary obstacles in the turning path. Outside of built-up areas, it additionally serves as a lane-changing assistant.
Efficiency: outstanding aerodynamics lower fuel consumption
The new double-decker bus is tailored for optimum aerodynamics from front to rear. At the front, windscreens with pronounced curvature and large edge radii allow the air to flow around the vehicle, while at the rear recesses and airflow breakaway edges guide the airflow in a controlled manner. The development engineers have attended to the most minute details: the windscreen wiper on the upper deck is vertical in its rest position, for example – a feature adopted from motorsport. These measures result in a drag coefficient of Cd = 0.35 - a new benchmark for this segment. The aerodynamics provide the basis for record-breaking fuel consumption, which drops by around seven to ten percent compared to the predecessor model, according to the type of use. Depending on the mileage covered, this adds up to savings of several thousand litres of fuel annually.
Comfort: bright interior, convenient stairs, innovative washroom
With a bright interior, with plenty of light and a modern design, the interior of the new Setra makes a spacious impression. The stairs connecting the lower and upper deck catch the eye in particular. Glazed on the outside, they feature panelling consisting of translucent acrylic plastic on the inside. Evenly spaced two-tone steps with individual lighting, landings and continuous handrails give passengers a sense of security when going up and down the stairs. The washroom in a totally new design is also worthy of note. Its installations are arranged diagonally, making maximum use of the available space. The gleaming white upper areas of the furnishings and the pleasant LED lighting are reminiscent of a modern bathroom.
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