The world’s longest bus is now claimed to be the Autotram Extra Grand. It was developed as part of a research project by the Frauenhofer IVI (Frauenhofer Institure for traffic and infrastructure systems). If you go to the project’s webpage you can view and download videos of the project and also learn more about some of the technical aspects of the vehicle.
Frauenhofer say that the train-like guidance of the vehicle is another significant technical feature. The AutoTram ® Extra Grand has four guided axles, three of which can be controlled by means of a secure electrohydraulic actuator system. With the multi-axle steering system, the vehicle can be maneuvered like a 12-meter bus both forward and reverse.
overall length 30,73 m
total height 3,40 m
min. turning circle 24,726 m
number of modules 3
number of axles 5
capacity seats 96, standing up to 160
The Frauenhofer IVI (link) is a research institute which “confronts present-day challenges, operating in a wide array of topics within several fields of research such as transport telematics, disposition, logistics, vehicle propulsion and sensor technologies, while also incorporating the information and communication sectors, traffic planning and traffic ecology.”