Vehicle Design
Typically passenger demand varies during a day, during a week or during a year. From the economic and environmental point of view it would be preferable to adapt the vehicle capacities to the actual passenger demand. Furthermore, high capacity buses would increase the efficiency of public transport, especially during peak hour traffic. However, high capacity buses are less economical during off-peak traffic times.

Modular bus concepts with the option to combine various bus segments in bus depots by (un)coupling the gangway systems of an articulated bus are a suitable option to increase flexibility for public transport services. A basic requirement in this regard is an appropriate propulsion concept consisting of self-driving modules. Moreover, it is necessary to deal with connectors and suitable methods to plug or unplug the modules.

The Technological Innovation of the Dresden demonstration is a coupling system as well as the (un)coupling procedure of bus articulations. Typically, the vehicle parts of an articulated bus form an inseparable unit. The vehicle parts are connected by a walkable gangway system in which an articulated joint is integrated.

The innovation is to implement a technical solution for the walkable gangway system, which enables the modular assembly of vehicle segments by the operator. Therefore, the (un)coupling of the new hardware and the corresponding procedure need to be evaluated in a controlled environment at the Fraunhofer test track Dresden in cooperation with the local transport operator, using the bi-articulated Fraunhofer AutoTram® Extra Grand as test vehicle.

The technological basis for this demonstration will be a new coupling system to be developed by HÜBNER, who are partner in the Dresden demonstration.

Propulsion technology: hybrid
Number of buses: 1 test vehicle
Test site: test site

The Dresden Demonstration is led by Fraunhofer with a support of HUEBNER.